Making Preparations at the Database Level

Context

Several preparatory steps are required at database level.

Procedure

Setup of IBM Db2 for z/OS
The details are described in the documentation SAP Database Administration Guide for SAP NetWeaver on IBM Db2 for z/OS.

In particular, ensure the following:
- All system parameters are set as described. You can check the settings with transaction DBACOCKPIT. Choose Performance Installation Parameters
- All required buffer pools (BP40, BP8K0, and BP16K0 in particular) are activated as described in the documentation.
- The stored procedures and related WLM address spaces are set up correctly, in particular for DSNUTILS (Db2 for z/OS online utilities) and ADMIN_COMMAND_DB2 (execution of Db2 for z/OS commands).
Check for required PTFs and APARs

SAP Note 81737 (APAR list) contains information on the PTFs that you need to import before the update. A PTF check tool is described in SAP Note 183311 . Any missing PTFs can lengthen the runtime of the update significantly.
Provide a database administrator user ID with SYSADM privilege.

It is used for automated administrative tasks such as GRANT or REVOKE.
Perform steps for RACF or other security products
During the update, a separate shadow system with its own schema is created.

If you use RACF, you therefore have to do the following for this additional schema:
- Define an authorization ID.
- Create an RACF group with the same name.
- Enter the Db2 Connect user as a member of this RACF group.
For more information about the general procedure, see the SAP documents SAP Planning Guide for SAP NetWeaver on IBM Db2 for z/OS and SAP Security Guide for IBM for Db2 for z/OS. If you use a different security product, perform the relevant steps according to the product documentation.