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What is SAP HANA Automated Predictive Library (APL)?

SAP HANA APL is an Application Function Library (AFL) which lets you use the data mining capabilities of the SAP Predictive Analytics automated analytics engine on your customer datasets stored in SAP HANA.

The APL is:
A set of functions that you use to implement a predictive modeling process in order to answer simple business questions on your customer datasets.
A set of simplified APL procedures: SAPL (Simple APL) that you can also use to call the APL functions.
You can create the following types of models to answer your business questions:

– Classification/Regression models
– Clustering models
– Time series analysis models
– Recommendation models

Installing SAP APL v2.5.10.x on SAP HANA SP10

 

Software Requirements

You must have the following software installed in order to use this version of SAP APL:

  1. SAP HANA SPS10 and higher
  2. SAP AFL SDK 1.00.090 or greater (this is part of SAP HANA)
  3. unixODBC 64 bits

SAP APL 2.0 Software download path in service market place

unixODBC 64 bits

APL has a dependency on the libodbc.so.1 library included in unixODBC. In the latest unixODBC versions, this library is available only in version libodbc.so.2 . The workaround in this situation is to create a symbolic link to libodbc.so.2 named libodbc.so.1 in the same folder.

http://www.unixodbc.org/

unixODBC installation

cd <unixODBC install folder> (for example /usr/lib64)

ln –s libodbc.so.2 libodbc.so.1

Installing SAP APL v2.5.10.x on SAP HANA SP10

 

SAP APL deployment in the hana server

Note: You need root privileges (sudo) to run the installer.

 

We could check the add-on installation from SAP HANA Studio

 

After the function library has been installed, the HANA script server must be enabled, and the HANA index server should be restarted. The following tables should contain APL entries which show that the APL is available:

 

— check that APL functions are there

select * from “SYS”.”AFL_AREAS”;

select * from “SYS”.”AFL_PACKAGES”;

select * from “SYS”.”AFL_FUNCTIONS” where AREA_NAME=’APL_AREA’;

select * from “SYS”.”AFL_FUNCTION_PARAMETERS” where AREA_NAME=’APL_AREA’;

select “F”.”SCHEMA_NAME”, “A”.”AREA_NAME”, “F”.”FUNCTION_NAME”, “F”.”NO_INPUT_PARAMS”, “F”.”NO_OUTPUT_PARAMS”, “F”.”FUNCTION_TYPE”, “F”.”BUSINESS_CATEGORY_NAME” from “SYS”.”AFL_FUNCTIONS_” F,”SYS”.”AFL_AREAS” A where “A”.”AREA_NAME”=’APL_AREA’ and “A”.”AREA_OID” = “F”.”AREA_OID”;

 

Configuration

This is the script delivered along with software and could find under the samples directory

hostname:/hana/data/HDB/SAP_APL/apl-2.5.0.0-hanasp10-linux_x64/samples/sql/direct # more apl_admin.sql

-- Run this as SYSTEM

connect SYSTEM password manager;



-- Enable script server

alter system alter configuration ('daemon.ini', 'SYSTEM') set ('scriptserver', 'instances') = '1' with reconfigure;

-- Check that APL functions are there

select * from "SYS"."AFL_AREAS";

select * from "SYS"."AFL_PACKAGES";

select * from "SYS"."AFL_FUNCTIONS" where AREA_NAME='APL_AREA';

select "F"."SCHEMA_NAME", "A"."AREA_NAME", "F"."FUNCTION_NAME", "F"."NO_INPUT_PARAMS", "F"."NO_OUTPUT_PARAMS", "F"."FUNCTION_TYPE", "F"."BUSINES

S_CATEGORY_NAME"

from "SYS"."AFL_FUNCTIONS_" F,"SYS"."AFL_AREAS" A

where "A"."AREA_NAME"='APL_AREA' and "A"."AREA_OID" = "F"."AREA_OID";

select * from "SYS"."AFL_FUNCTION_PARAMETERS" where AREA_NAME='APL_AREA';



-- Create a HANA user known as USER_APL, who's meant to run the APL functions

drop user USER_APL cascade;

create user USER_APL password Password1;

alter user USER_APL disable password lifetime;

-- Sample datasets can be imported from the folder /samples/data provided in the APL tarball

-- Grant access to sample datasets

grant select on SCHEMA "APL_SAMPLES" to USER_APL;



-- Grant execution right on APL functions to the user USER_APL

grant AFL__SYS_AFL_APL_AREA_EXECUTE to USER_APL;

grant AFLPM_CREATOR_ERASER_EXECUTE TO USER_APL; 

 

There is one step not shown in the sample SQL, which is creating the APL_SAMPLES schema, this is straightforward such as

create schema APL_SAMPLES;

 

Create table types by using the stored procedure “apl_create_table_types.sql”

 

Import samples data from the download directory

Check the imported content from SAP HANA studio

 

The samples should now all be configured and available for use directly via SQL or using Predictive Analysis 2.0.

 

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