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Author's profile photo Dominik Ofenloch

New Client Copy Tool

Overview

With SAP_BASIS 7.54 (SAP S/4HANA 1909), SAP delivers new client management tools based on new common architecture. They are a complete redesign of the previous client copy (transactions SCCL, SCC9, SCC5, …). The new tools replace the old client copy and also offer new functions. They are optimized for increased performance, process automation and stability. The log of the client copy has also been completely revised and is now much more meaningful and easier to read, so that troubleshooting is much easier.

There are also new tools to compare clients and to determine the size of clients. With SAP_BASIS 7.55, the client export and client import have been expanded to include the option of exporting / importing so-called “snapshots”.

In this blog I’ll will introduce you to the following tools:

  • New Local Client Copy
  • New Remote Client Copy
  • New Client Export and Import using Transports or Snapshots
  • New Client Size Estimation Tool
  • New Client Comparison

Why a new Client Copy Tool?

The client copy tool was originally developed in the 1990s. Since then, it has been further developed and maintained, but more and more fundamental problems came to light, especially with regard to new cloud processes, which required a new solution.

Therefore, at the end of 2017, the development of a new client copy tool began. With SAP_BASIS 7.54 (S/4HANA 1909), the new tool was delivered to customers for the first time in 2019. With SAP_BASIS 7.55 (S/4HANA 2020) the client export and the client import were also converted to the new architecture. With SAP_BASIS 7.55 Service Pack 1, transaction SCC1 is finally moved to the new architecture.

Compared to the old Client Copy Tool, the number of code statements went from over 25,000 to less than half with a significantly expanded range of functions such as the comparison tool. The new Client Copy Tool today has a unit test code coverage of over 94% over the entire coding.

Improvements

The new tool solves conceptual problems of the old client copy and is characterized by increased stability compared to its predecessor.

Execution from a third Client. It is no longer necessary to start the client copy in the target client. Instead, this can now be started in a neutral third client (usually client 000). This increases efficiency and ensures that no users romp around in the target client during the client copy. The use of the user SAP * and restart of the application server to enable the user is no longer necessary.

Execution%20from%20Third%20Client

Execution from Third Client

HANA Optimization. The new tool is optimized for use with HANA. Our tests showed that the new Local Client Copy is about 10x faster than the old tool. The new Remote Copy was up to 5 times faster than the old tool in our tests. Instead of first loading the data onto the application server for a local copy, the data remains on the database during a local client copy by using an INSERT FROM SELECT statement.

INSERT%20%28Target%20Client%29%20FROM%20SELECT%20%28Source%20Client%29

INSERT (Target Client) FROM SELECT (Source Client)

Client Copy Optimizer. The new Client Copy Tool has implemented an optimizer for empty and unchanged tables. At the beginning of each client copy, the tool reads the HANA database statistics. It then checks whether a table in the database is completely empty in all clients. If this is the case, this table can be skipped in the delete and copy phase. The optimizer also checks whether a table has been changed since the last client copy on the database. If a table has not changed since the last client copy and the last client copy had the same source and target clients, this table can also be excluded from the delete and copy phase. This optimization is particularly useful for regular copies of test clients or in the event of an aborted client copy.

Handling of very large tables. In order to be able to deal with very large database tables, the Client Copy was enhanced to include a splitter algorithm. This splits very large database tables by generating WHERE conditions, which can then be copied by different processes in parallel. This ensures that the allocation limit in HANA and ABAP is not exceeded during the copy process. Furthermore, this algorithm increases the performance, since very large tables can be copied by several processes at the same time.

New%20Feature%3A%20Table%20Splitting%20Algorithm

Table Splitting Algorithm generates WHERE-Conditions for Parallel Processing

Class-based Exit Framework. Exits are now based on class interfaces and now run in an isolated environment. By using interfaces, there is now a clear interface between the Client Copy Tool and the exits. Running in an isolated environment ensures that a broken exit cannot crash the entire Client Copy Tool. With SAP_BASIS 756 exits are executed in parallel processes.

Old exits are still supported and executed via a wrapper exit. If you have an old exit, please contact SAP to receive support in implementing the new exit framework. You can find more information about exits in the client copy section.

Renovated Log. Finally, the client copy log (transaction SCC3) was completely revised and replaced by a clearer solution. The logs are shown in tabs. In addition to the well-known “Client View”, there is now a “Timeline View” and a view for each copy mode (local copy, remote copy, etc.). Different columns show the exit status, the table copy status and a general message status. This makes it possible to assess the success of a client copy at a glance. With SAP_BASIS 756, SCC3 supports the display of the client size based on the data collected by the Client Size Estimation Tool and the Client Copy Tool.

New Client Copy Log Transaction (SCC3)

Tasklist Support. All of the new copy processes presented here now offer execution via task lists. The task lists can either be started from the corresponding transaction or directly using transaction STC01.

Client Tools

SAP delivers various client tools:

  • Local Client Copy for a copy within the same system
  • Remote Client Copy for a copy from another system to the local system
  • Client Deletion for the deletion of a client
  • Client Export and Client Import for the export and import of clients in transport requests or client snapshots (new feature)
  • Copy from Transports (SCC1N) for copying Customizing Objects within the same system.

Client Copy

There are two types of client copies:

  • Local Client Copy
    The local client copy takes place within a system. The local client copy is started via transaction SCCLN.
  • Remote Client Copy
    The remote client copy copies data from an external system to another client in the target system using RFC. The process is always started from the target system. The remote client copy is started via transaction SCC9N.

Differences between Local and Remote Client Copy

The process flow of the local and remote client copy is basically the same. However, there are some special features to consider with the remote copy that do not occur with a local copy:

  • Often the DDIC table definitions differ between the source and target systems due to different releases. Before each remote copy, the Client Copy Tool compares the DDIC table definitions and rules out incompatible tables. A table is e.g. incompatible if a field in the target system that is available in the source system is missing or has a shorter data type.
  • While exits run in the analysis phase of a local copy in the target system and target client, the same phase is executed in the source client for a remote copy in the source system.

Client Copy Phases

The new client copy runs in four phases:

  1. Initialization Phase
    In the first phase the tool initializes the list of all relevant tables, the client lock objects, the exit handler and many other smaller objects.
  2. Analysis Phase
    In the second phase, all client copy exits are executed. Exits can exclude certain tables from the copy, request emptying or even explicitly include tables into the list of tables to be copied.
    After all exits finished, the finalized list of tables to be deleted and copied is saved in the database. If the option to split tables is activated, very large database tables are analyzed for processing in parallel processes and broken down into smaller work packages.
  3. Delete and Copy Phase
    The actual deletion and copying process takes place in this phase. First, all tables in the target client are deleted. The data is then copied from the source client to the target client. After all tables have been finished the source client gets unlocked.
  4. Post Processing Phase
    Finally, the postprocessing exits run. Typically, these convert data or generate objects that are dependent on the data.

New Features

The New Client Copy has the following new features:

  • Split Large Tables
  • Copy Individual Tables
  • Options to tolerate failed Exits and Tables
  • Simultaneous execution of several client copies in the same system (from SAP_BASIS 756)

For more details please check section “Processing Options” in this blog.

Client Deletion

The new client deletion is started via transaction SCC5N. It has the same phases as the client copy. The client can be deleted directly from the client list (accessible via transaction SCC4) using the “Delete from System Table T000” setting. In contrast to the old client deletion, the transaction must be started from another client and no longer from the client to be deleted.

Client Export and Import

The client export and client import process have also been completely revised. The basic idea of ​​this process is to freeze a client on an “external” data carrier so that it can then be imported into another or several target systems. Exports enable a client to be frozen at a specific point in time.

The old Client Copy Tool previously only allowed exports using transport requests. With SAP_BASIS 755 there is now a further option for exporting to “Client Table Snapshots”. These are saved in the database of the exporting system and can be imported into the import system via an RFC connection. Compared to transport requests, the snapshots offer increased performance and greater flexibility in usability. The list of all snapshots can be viewed in transaction SCC3.

Please note: Exports that were carried out with the old tool are not compatible with the new tool and vice versa.

Copy Data from Transports

The transaction SCC1 was revised as the last client tool. The new transaction is released for customers from 2020 SP01.

Please note that the transaction was already delivered with SP00 but is not yet functional.

With the help of SCC1N it is possible to copy customizing objects recorded in transport requests to several target clients. This can be a local transport request or an imported transport request from another system.

In contrast to transaction SCC1, SCC1N can be executed in any client. The log has been completely revised analogous to the client copy log. Based on the feedback from internal customers, additional selection parameters were added.

Transaction SCC1N is a further development of the old transaction SCC1 and the old report RSCC_SCC1_BATCH. As a result, compared to the old SCC1, a large number of new parameters are available. If you want to copy transport requests that have not been released with SCC1N as in SCC1, proceed as follows:

  • In the “Export / Import Time of the Transport Request” group, select the “Local Import / Update Date” radio button.
  • If it is a mandatory field, enter a date that is far in the past in the “Export / Import Date” field.

Comparison Tool

A new product is delivered with the comparison tool. It allows the comparison of clients, client table snapshots or client templates in any combination. The Comparison Tool can be used to compare customizing or entire clients. The comparison tool is started using transaction SCC_COMPARE.

Comparison Modes

The Comparison Tool offers three comparison modes:

  • Checksum Comparison. In this mode, the comparison tool selects the data of both comparison objects, creates a checksum and finally compares the checksums. In the case of different checksums, differences were found between the two objects. The checksum comparison is the fastest method for comparing two objects, but it does not offer any possibility to compare the data.
  • Detailed Comparison. In this mode the comparison tool selects the data of both comparison objects and compares them line by line. The data records are divided into the following categories:
    1. Data that only exist in comparison object 1,
    2. Data that only exist in comparison object 2,
    3. Data with an identical key but different non-key field values ​​and
    4. Data records that are completely identical.
  • Store as Template Container. Like the Detailed Comparison. However, the comparison result is saved in a template container.

Note: Please note that the Comparison Tool is not designed to compare very large database tables and drill down into these tables. We only recommend a checksum comparison for these tables.

Data sources

The Comparison Tool offers the selection of several data sources for selecting the tables to be compared:

  • Profile. Please note that SAP does not deliver a comparison tool.
  • Individual table list. You can compare any tables with one another. With a remote comparison, even client-independent tables can be compared with one another.
  • Run Id. Tables from a previously executed client copy.

Comparison Results

After a successful comparison run, you can view the result on the next screen or on tab “Comparison” of transaction SCC3. You can see the result of the comparison on the “Compared Tables” tab. By double-clicking on the table name, you can drill down to the compared data and check the differences in detail.

Comparison%20Run%20Result

Comparison Run Result

Client Size Estimation

The Client Size Estimation Tool allows you to estimate the size of individual tables or an entire client. The tool calculates the client’s disk size using the following formula:

Table Size = Table Disk Size on the database / Total Number of table rows * Number of rows in the examined client

The actual data in the client is not considered here. HANA internal compression is not considered here as well. In the case of tables with fields of dynamic length, the algorithm can therefore only offer an orientation value.

The Client Size Estimation Tool is started using transaction SCC_CLIENT_SIZE.

Client%20Size%20Estimation%20Tool

Client Size Estimation Tool

As of SAP_BASIS 756, the Client Size Estimation Tool runs automatically with every client copy. The size of all clients can then be checked in transaction SCC3.

Client Copy Log

The protocol transaction SCC3 was completely renovated. The transaction is now completely tab-based. Logs are now stored in the database instead of the file system.

Overview Screen

While a client copy is running you will always find a summary of the current status of the client copy on the first tab. This shows you information about the current running process, the source and target clients and the progress of deletion and copying.

First Tab showing Active Process while Client Copy is running

Otherwise you will find an overview of all clients in the system on the first tab. With a double click you can select a client in order to have a closer look at all processes carried out in this client. With this click you will automatically be directed to the second tab.

SCC3 Overview Screen

The so-called “Timeline View” is new. On this tab you can see all the processes carried out by the tool in descending chronological order.

This is followed by several tabs with detailed views for the local client copy, the remote client copy, client deletions, client export, client import, transport request copies, client comparison and finally the client table snapshots and client template containers.

Detailed Log

A double click takes you from the overview list to the detailed view of a log. On the first tab “Log Header” you can see a general overview of the current mode, the selected profile, the clients concerned, the exit status and the process status.

Processed%20Tables%20of%20a%20Client%20Copy

Processed Tables of a Client Copy

Here is an overview of the most important tabs:

  • Log Header. Overview of the current mode, the selected profile, the clients concerned, the exit status and the process status.
  • Options. List of the settings made on the selection screen.
  • Table statistics. Overview of the number of emptied and copied tables and the number of deleted and copied data records. In addition, you can see the number of skipped tables on the tab because they were either empty on the database or were already copied from a previous client copy.
  • General Messages. General messages returned by the Client Copy Tool.
  • Exit Messages. Messages issued by exits.
  • Processed tables. Overview of all tables processed by the Client Copy Tool. The current progress of the copying process during a client copy can also be tracked on this tab.
  • Included/Excluded Tables. List of all tables integrated or excluded by the Client Copy Tool or by exits. If a table was copied or not copied, you can find out the reason here. In the case of remote copies, you will also see all tables on this tab that cannot be copied due to incompatible DDIC structures.
  • Disk Space. Estimation of the deleted and copied data volume (see also under Client Size Estimation Tool).
  • Runtime. Exact listing of the runtime of the individual client copy phases. This tab is particularly useful for performance analysis.
  • Exit Execution. List of all executed exit methods. Each exit returns a status of its successful execution. The runtime of each exit is logged on this tab.
  • Exit Definition. List of exit definitions as they were valid at the time the process was executed.

Log Administration

The transaction SCC3_ADMIN was published with SAP_BASIS 755 SP01. In contrast to SCC3, SCC3_ADMIN offers further functions for deleting logs, snapshots and containers.

Deletion of old Logs

Especially in systems with many recurring client copies, I recommend regular cleaning up of the log tables, as the log tables can become very large.

Since several data records are written to the database for each table copied by the Client Copy Tool, we recommend deleting old logs that are no longer required at regular intervals. With SAP_BASIS 755, transaction SCC3 has been expanded to include a delete function for client copy logs. For this purpose, a delete button has been integrated into the table on the “Timeline View” tab.

With release SAP_BASIS 755 Service Pack 1, this function is moved to transaction SCC3_ADMIN. This ensures that transaction SCC3 remains a read-only transaction.

Using the Log Cleanup Tool is more convenient than deleting individual logs. This can be called up in SCC3_ADMIN via the menu item “Goto” -> “Log Cleanup”. The tool enables the deletion of logs older than <n> days, whereby a minimum number of the last logs can be kept per client. The Log Cleanup Tool can also be started from the SAP_CLIENT_LOG_CLEANUP task list.

Deletion of Snapshots/Container

Snaphots and containers can be deleted on the “Client Table Snapshot” or “Client Template Container” tab using the corresponding toolbar button. There is also the SAP_CLIENT_CONTAINER_DELETE task list for the regular deletion of old objects. This can be started using transaction STC01.

Client Table Snapshots

With SAP_BASIS 755, SAP delivers client table snapshots and client template containers for the first time. Client table snapshots are local objects that are stored in tables of delivery class “L” (temporary data). 

What are snapshots?

Snapshots are based on the Remote Client Copy table copying algorithm and allow any database table to be backed up. A snapshot can have any name and store any number of tables. The data of each individual table is stored as a serialized RAWSTRING in several database tables.

With the help of a checksum on the serialized data, the data of each table is stored centrally once across all snapshots. With a regular backup of an entire client, only the delta between two backups would take up additional storage space, since an identical checksum would only save the same data once under the same key (checksum) with two or more snapshots.

Usage

Snapshots are especially relevant for client export and client import. You can export an entire client or individual database tables to a snapshot using the Client Export Tool (SCC8N). Until now, the Client Export Tool could only export into Transport Requests.

In contrast to the transport request, snapshots have several advantages. This makes them easier to use because they are stored in the system’s database and not in the application server’s file system. Containers can be imported into other systems via an RFC connection (similar to Remote Client Copy). Containers are saved with optimized storage space. In addition, creating and importing a snapshot takes less than half the time than using transport requests.

This makes containers particularly suitable as an alternative to client export and import with transport requests and for freezing test clients that can be restored over and over again.

With the help of the comparison tool it is possible to compare the data of a snapshot with the current data in the client.

Processing Options

The Client Copy Tools come with multiple processing options:

  • Test Mode. The program logic of the client copy is completely performed, without writing or deleting in the database, so the behavior of a client copy is simulated. A complete log is created (display with transaction SCC3).
  • Lock Source Client. Locks the Source Client while performing a Client Copy.
    In case this option is enabled the client copy tool locks the source client for users. Users still logged on will not be thrown out of the client but logon to the client is no longer possible. To ensure data consistency we strongly recommend to keep this option always enabled.
  • Tolerate Failed Exits. Ignore failed Client Copy Application Exits while performing a client copy.
    In case this option is enabled failed exits will not cancel the client copy process.
  • Tolerate Failed Tables. Ignores Table Deletion-/Copy Errors.
    In case this option is enabled failed table deletion-/copy-operations will not cancel the client copy process. All other tables will be processed.
  • Use Exclusive Locks. Use of exclusive database table locks.
    In case this option is enabled the client copy tool sets an exclusive lock on each table being copied. This reduces the memory footprint in the database and speeds up the database operation. As long as the table is locked exclusively any other tool cannot update the database table. Therefore, we recommend disabling this option in case the system is still used by other users while performing the client copy.
  • Split Large Tables. Split Large Tables while performing a client copy.
    In case this option is enabled the client copy splits up large tables into smaller units for performing the copy-operation in parallel processes. This avoids that the database runs out of memory and enables the client copy tool to perform copy-operations in parallel processes.
    It is recommended to enable this option by default.
    This option is permanently activated as of SAP_BASIS 756 and is therefore no longer available on the selection screen.
  • Copy Incompatible Tables (RFC). Copies tables from remote systems, even if their structure is not identical.
    Tables having different structures will be copied even in case of data loss. This applies for example for tables in case at least one column is only available in the source system but not in the target system. All incompatible Tables which will be copied anyhow are documented in the client copy protocol.

    • If this option is disabled: Below is the rule list for a table to be marked “INCOMPATIBLE” by the client copy tool.
      • The table must be present in both source and target system.
      • If the table exists in both systems, then the key fields should be the same.
      • The field list in both systems should be the same, however the position of the fields can be different.
      • The data type of all the fields must be the same.
      • The length of the fields must not be shorter in the target system. It can be greater or same length.
    • If this option is enabled: The tables not falling in the below rule list will be marked “INCOMPATIBLE” and will be skipped/excluded from copy.
      • The table must be present in both source and target system.
      • If the table exists in both systems, then the key fields should be the same.
      • The field list can differ. That is, missing fields are ignored, and matching field data will be copied
      • The data type of the matching fields must be the same
      • The length of the fields must not be shorter in the target system. It can be greater or same length.
  • Automated Import Postprocessing. Executes the import post-processing (transaction SCC7N) automatically immediately after an exported client got imported. If activated, you no longer need to manually call transaction SCC7N after importing an exported client. This option is only available for Client Export to a Transport Request.
  • Release Transport Requests on Client Export. Releases the transport requests at the end of the export process. The exported Transport Requests will be released immediately as part of the client export process.This option is only available for Client Export to a Transport Request.
  • Use Mode Vector/All Languages. Use Export Option LSM-Mode = Vector and export all languages on transport release.This option is only available for Client Export to a Transport Request.

Overview of Transaction Codes and Tasklists

Process/Tasks Old Transaction New Transaction Tasklist Released with
Local Client Copy SCCL SCCLN SAP_CLIENT_COPY_LOCAL SAP_BASIS 754 SP00
Remote Client Copy SCC9 SCC9N SAP_CLIENT_COPY_REMOTE SAP_BASIS 754 SP01
Client Deletion SCC5 SCC5N SAP_CLIENT_DELETION SAP_BASIS 754 SP00
Client Export SCC8 SCC8N SAP_CLIENT_EXPORT SAP_BASIS 754 SP02
Client Import SCC7 SCC7N SAP_CLIENT_IMPORT_POSTPROCESSING SAP_BASIS 754 SP02
Client Copy Log SCC3 SCC3 n/a SAP_BASIS 754 SP01
Client Copy – Special Selection SCC1 SCC1N SAP_CLIENT_COPY_BY_TRANSPORT SAP_BASIS 755 SP01
Comparison Tool N/A SCC_COMPARE SAP_CLIENT_COMPARISON SAP_BASIS 754 SP03
Client Size Determination N/A SCC_CLIENT_SIZE SAP_BASIS 754 SP00

New Authorization Checks

Please note that with the new Client Copy Tool, new authorization objects have also been introduced. See the main note 2962811 for more information.

Related Information

Client Copy Main Note: 2962811

SAP Help Portal: Client Copy and Transport

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      35 Comments
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      Author's profile photo Vignesh Subramanian
      Vignesh Subramanian

      Very Informative Blog ! Thanks for sharing.

      Author's profile photo Carlos Wenceslau
      Carlos Wenceslau

      Nice, thanks or sharing!

      Author's profile photo Application Access Team
      Application Access Team

      Great job, thanks for sharing

      Author's profile photo zahid hussain
      zahid hussain

      Nice document .

      Author's profile photo Daniel Masaladzic
      Daniel Masaladzic

      Hello Dominik,

      Thanks for your blog entry. Actually there is something about client copies that I never managed to clarify: Will every copy profile (except SAP_USER) empty all of the target client before the import/copy starts?

      To find answers I checked some 2020 SAP course material and the describing picture explains, that client itself consists of “application data”, “client dependent customizing” and “user master data”. Also I can find the statement: “user master data is only deleted in the target system if a profile with user master data is copied.” So here is the first exception.

      In a official SAP administration book I can read “Except SAP_USER: before the copy process starts, customizing and application data in the target client will be deleted.” Just to make sure: I guess they refer to client dependent customizing? To my understanding most of the clients content will actually be deleted because the only thing left here is “user master data”. What do you say?

      This topic is of interest to me, since a customer came up and asked if there is a way to copy only customizing to from one client to another withour overwriting anything else.

      Thanks and regards

      Daniel

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Hi Daniel,

      unfortunately we don't have any profile available which copies only RAW-data customizing. In case you use SAP_CUST profile all application data will be deleted. Of course only client-dependent data will be cleared by the profile.

      Best regards,

      Dominik

      Author's profile photo Daniel Masaladzic
      Daniel Masaladzic

      Hi Dominik,

      thanks again for your quick reply 🙂 Sorry for asking this again: First, I understand that no repository or client independent customizing will be deleted while doing a client copy. But what about the data that is contained in the client. To cite it from the SAP course material:

      • Application Data
      • Client dependent Customizing
      • User Master Data

      As far as I understand from the information in the book there is only these three parts?

      Best

      Daniel

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      These three objects are the most important objects copied by the client copy tool.

      But there are even some more. Explaining them all would be a separate blog post (Maybe that's a good idea). Please check out database table CCPROF to see a overview of all profiles and attributes controlled by the profiles.

      Author's profile photo Sumit Jaiswal
      Sumit Jaiswal

      A great article. Thanks Dominik Ofenloch

      One question. Is new tcode SCC_CLIENT_SIZE different from old age program RSSPACECHECK in determining the client's size?

       

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Thank you very much for your feedback!

      Transaction SCC_CLIENT_SIZE is the successor of RSSPACECHECK. It is much faster as it uses the parallelization of the client copy tool.

      Author's profile photo JAYVARDHANA SHARMA
      JAYVARDHANA SHARMA

      Very informative blog with things explained so well!!

      Author's profile photo Christina Suresh
      Christina Suresh

      Hi Dominik,

      Thanks for this blog, very useful!

      I can't find much information on SCC1N anywhere and hope you can clarify. When we import source customizing transport in the target DEV unit test client using SCC1N, it seems to create a new Copy Transport to do the job. The copy transport is also released and added automatically to the QAS import queue making it all very confusing. Is this the intended mechanism of the new SCC1N transaction?

      Regards

      Christina

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Hi Christina,

      thank you very much for your feedback!

      About SCC1N: This transaction is already available with 755 SP00 but it is not recommended to use it in this release as it still comes with some issues you identified. Therefore, I haven't added details about that transaction to this blog yet. With SAP_BASIS 755 SP01 coming next year it will be generally available without any issues. Then I'll extend this blog with a new section explaining SCC1N in detail as well.

      Best regards

      Dominik

      Author's profile photo Christina Suresh
      Christina Suresh

      Thank you so much Dominik for taking the time to reply!

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Hi Christina!

      SCC1N now has been added.

      Best regards,

      Dominik

      Author's profile photo Christina Suresh
      Christina Suresh

      Hi Dominik,

      Thank you. Are there any plans to release SAP Notes to correct SSC1N in 2020 SPS 00 please? We are doing a greenfield implementation and it is unlikely we will be upgrading to SPS 01 anytime soon.

      Regards

      Christina

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Unfortunately not. Actually the tool has been completely refactored with SP01 and these changes are too complex for a note.

      Author's profile photo Kwan Loong, Joseph Song
      Kwan Loong, Joseph Song

      Good day Dominik Ofenloch , and hope you’re well.

      We are using S/4HANA 2020 FPS01 with SAP_BASIS 755 0001.

      However, the SCC1N tool seems to be not working as expected such as the objects were not copied over although SCC1N showed successfully completed.
      There are some issues where the SCC1N unable to find the transport request. We have implemented the SAP NOTE 3026947 but the issue still persist.

      May I know if you aware similar issues were reported by other customers or is it not recommended to use SCC1N in SAP_BASIS 755 0001 ?

      Regards,
      Joseph

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Hi Joseph,

      I'm currently processing a similar issue from another customer. Please open an incident on component BC-CTS-CCO and provide details. We'll then come back to you asap.

      Best regards,

      Dominik

      Author's profile photo Mohamed Chérif BOUKHALFA-BENNAI
      Mohamed Chérif BOUKHALFA-BENNAI

      Hello
      We thank you for this information and its importance in the administration of the Client sap

      Greetings and thanks

      Author's profile photo Harish Pichukala
      Harish Pichukala

      Hi Dominik,

      Thanks for the blog. Recently we have performed the client copy using new tool. We got several errors with post processing steps. Is there is any way that we can restart option in SCCLN (continue from the step where it got cancelled) . I didn't see much info on that one in restart option in new tool.

      One more question do we need to run the BDLS  after client copy. Can you please clarity on this one too because we can see some task in post processing related to BDLS in new tool (SCCLN)

      Regards,

      Harish

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Hi Harish,

      in Post Processing only Exits are running. Please open an incident on the according exit components.

      About restart-option: With the new tool this option is no longer available. Instead the new tool offers an optimizer which skips unchanged database tables. This ensures that a restart will be always faster than the failed run.

      Providing a general restart option is unfortunately not possible. This would be risky as after cancellation the 1) source and target client gets unlocked and 2) we don't know whether the failed exit can be simply "restarted".

      About BDLS. Please open an incident to discuss your request with development team.

      Thanks and

      Best regards,

      Dominik

      Author's profile photo Thomas Janssen
      Thomas Janssen

      Hi Dominik,

      apart from “empty” checks for activity “display” with authority objects S_TC, S_TABU_RFC and S_TRANSPORT I cannot see any “REAL” authority check e.g. with target client in SCC1N. But that would be necessary for us to regulate which user can execute which activities.

      Otherwise thanks for the informations about this new tool.

      Regards,
      Thomas

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Hi Thomas,

      unfortunately this is a gap. In comparison to old SCC1N the new tool can be executed in any client for any other client. Unfortunately we missed extending the authorization framework. We already have new auth checks in backlog and we'll them in the next releases.

      Best regards,

      Dominik

      Author's profile photo Kálmán Varga
      Kálmán Varga

      Hi Dominik,

      First of all: thank you for designing and developing this new client tool group. You added features and functionalities I missed since long time ago.

      I met a bit disturbing behavior in the new SCC3: on the 'Active Remote Process' tab there are 13 entries, with red sign at the Processing Status.

      25.06.21 Dynamic List Display 1
      --------------------------------------------------------------------------------
      --------------------------------------------------
      | Option |Value |
      --------------------------------------------------
      | Mode |Local Copy |
      | Run Id |ACTIVE_RFC |
      | Test Mode |Off |
      | Profile | |
      | Profile Description| |
      | Source Client | |
      | Target Client | |
      | Runtime |0 seconds |
      | Processing Status | |
      | Created By | |
      | Created On |00.00.0000 00:00:00 CET|
      | Changed By | |
      | Changed On |00.00.0000 00:00:00 CET|
      --------------------------------------------------

      I can't find any reference to this. Can you please tell me how can I remove it?

      Thanks in advance:

      Kalman

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Hi!

      It seems a cancelled remote copy log record hasn't been cleanup properly in the source system. Please check table CCCFLOWV2 for the record having timestamp ACTIVE_RFC or open an incident on BC-CTS-CCO.

      Best regards,

      Dominik

      Author's profile photo Uta Hedemann
      Uta Hedemann

      We also have these entries in our  S4/HANA 2020 FPS systems  (freshly installed with S/4HANA FPS 01 or upgraded from S4/HANA 1909 -> S/4HANA FPS 01) ,

      I checked CCCFLOWV2 in these systems  and found only older timestamps and in 1 system table CCCFLOWV2 was empty. For me it looks like these entries in SCC3 are "normal" and I ignore them.

      I have tried the new Copy Transaction SCCLN in S4/HANA 2020 FPS00 but we had errors in  user exits: authorization errors, missing RFCs etc. so meanwhile we have continued to use  the old transaction SCCL.

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Hi Uta,

      these record belong to remote client copies started in other systems. They should not be there in case there is no active client copy running or it was never started.

      Also in case of the user authorization problems with new tool:

      I kindly ask you to open incidents on BC-CTS-CCO. Even when this is just a minor issue. Your reported problems will help us fixing the these issues and provide solutions to other customers facing same problem.

      Thanks and

      Best regards,

      Dominik

      Author's profile photo Uta Hedemann
      Uta Hedemann

      Hi Dominik,

      We haven't used remote clientcopy in most of  the systems.
      In  our newest SAP  system XXX, which I built up freshly shortly with sapinst+SUM (sapinst with stackfile)

      • I only made a lokal clientcopy with SCCL
      • table  CCCFLOWV2  is empty.
      • but I have the mentioned entry  from my screenhot in my last post, too.

      I could imagine that the entry was already included in the database export files from SAP, which is implemented, when installing S/4HANA FPS01
      (SUM  uses S4CORE105_INST_EXPORT_<nr>.zip files and then SUM is doing a restore of a hana database backup at SAP as one could see in sapinst.logs and

      HdbCmdOut.log:

      Wed May 26 19:29:13 CEST 2021 | com.sap.hdb.sl.lib.instance.DatabaseTenant | Run SQL command: RECOVER DATA FOR XXX USING FILE ('/usr/sap/XXX/HDBXX/backup/data/DB_XXX3/S4CORE105') CLEAR LOG
      
      Wed May 26 19:34:36 CEST 2021 | com.sap.hdb.sl.lib.utils.cmd.clazz.StartDatabaseRecoveryTenant | Starting HANA tenant XXX

      Maybe you sapinst collegues  know from which internal SAP-system the backup was done...

      I would think that the SCC3 entry is ignorable....

      BTW: There are also some entries in hana database which are not optimal in the database export from SAP and have to be corrected manually  from each customer (2116157 - FAQ: SAP HANA Consistency Checks and Corruptions - SAP ONE Support Launchpad after installation with DB Backup from SAP ('check_table_container_no_load'

      Regarding the new authorizations I have contacted our security guys to check note 2962811 and add all authorizations to be prepared. But sometimes clientcopies are time critical, so sometimes we don't have time to test  new functionalities, wait for customer message answer etc. But I am sure we'll try the new SCCLN some day again...

      Uta

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      The entry in SCC3 can be ignored for sure. It points to a bug in transaction SCC3. Fixing this shouldn't be a big deal. A further remote diagnosis is hardly possible. Therefore I would like to encourage anyone raising incidents on BC-CTS-CCO

      Best regards,

      Dominik

      Author's profile photo Ajithkumar Krishnakumar
      Ajithkumar Krishnakumar

      Good blog. Is it possible to use this tool to reduce a data-set while doing a remote client copy? i.e. a full copy from a production sized system to a lower sized non-prod system while retaining only the Customizing and Master data (And i'm referring to the application master data and not user master data)

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Please check whether different client copy profiles as SAP_CUST fit to your requirement.

      Author's profile photo Javier Poot
      Javier Poot

      Nice blog Dominik,

      I have an S4H 1909 FP2, SAP_BASIS 754 SP02

      I've exported a client via SCC8N to a container. Then I've imported successfully in a remote system via the SCC7N, indeed there is a good performance improvement compared against the old tools.

      But I haven't found information how to monitor or delete a container.

      Is there any HANA view or ABAP t-code for this purpose?

      Also, as per SAP note 2962811 the "snapshot" feature was released on 755 SP00 (S4H 2020), so I'm not sure if the container option in my 754 system is the same "snapshot" mentioned here. Could you clarify?

      SCC8N%20S4H1909fp2

      SCC8N S4H1909fp2

      Thanks

      Javier

      Author's profile photo Dominik Ofenloch
      Dominik Ofenloch
      Blog Post Author

      Hi Javier,

      please check in transaction SCC3 for a delete toolbar button. In case it is not available this feature might not yet be available in your release. In newer releases you can delete containers using transaction SCC3 or SCC3_ADMIN (newest release).

      But you can easily delete the containers manually by clearing the database tables CCTABCONTAINER, CCTABCONTHEADER, CCTABCONTSLDATA and CCTABCONTSLICE.

      These tables can be completely truncated as they are used for storing containers only.

      Best regards,

      Dominik

      Author's profile photo Javier Poot
      Javier Poot

      Hi,

      I had access to an S4H 2020 FP2 SAP_BASIS 755 SP2 and neither SCC3 nor SCC3_ADMIN has a button/option, I will check when have access to new releases.

      In the meantime I'm going to proceed manually truncating the tables as per your advice.

      Thank you!

      Javier