Data transfer within SAP HANA Cloud instances deployed in different sub-accounts & regions
First Instance : VST
– Provider : Microsoft Azure
– Region : Europe (Netherlands)
Second Instance : SHC
– Provider : Amazon Web Services (AWS)
– Region : Europe (Frankfurt)
Connection from on-premise to SAP HANA Cloud instance and data transfer was very well explained in one of the previous blog post by Mr. Takao Haruki.
In this blog post I will try to explain how to establish connection within 2 SAP HANA Cloud instances i.e. VST & SHC from above diagram and then we will access the table of on-premise Hana system on both the instances as well.
- Download digital certificate from local machine using this link.
- Open Database Explorer for SHC instance with DBADMIN user, expand “Catalog” and do right click on “Remote Sources”.
- Create a remote source using “Digital Certificate String” downloaded from above step and “end point” of VST system.
I provided below options while creating remote source :- Source Name : SHC_to_VST
– Adapter Name : HANA (ODBC)
– Connection Mode : Adapter Properties
– Server : from <end_point> of VST
– Port : 443
– DML Mode : ReadWrite
– Extra Adapter Properties : <from step 1, get digital string and remove all new lines, also include comments BEGIN & END CERTIFICATE>
– Credentials Mode : Technical user
– User Name : <schema_user_of_VST_which_needs_to_be_accessed>
– Password : <schema_user_password>
- Once remote source is created, navigate to “Privilege Assignment” tab, from HANA Cockpit and provide below privileges to a user from which you want to access the virtual tables (SHC_CON in my case) on remote source SHC_to_VST :- ALTER
– CREATE REMOTE SUBSCRIPTION
– CREATE VIRTUAL FUNCTION
– CREATE VIRTUAL TABLE
– PROCESS REMOTE SUBSCRIPTION EXECUTION
- Now logon to database explorer again with user SHC_CON and open the remote source SHC_to_VST. Filter for your tables and then create VIRTUAL TABLES for them :
- I filtered above for DDNTF table and now I can create Virtual Table for any of them. As you can see it also shows “DDNTF_VT” table, which itself is a virtual table created on VST instance with remote source created on on-premise system.
In this way, you can access a VIRTUAL table/local table created on any SAP HANA Cloud instance into another SAP HANA Cloud instance from different sub-account / regions.
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