BW Migration to HANA Part 3 - Post-processing on the Migrated System
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This document is the third part of a series on migrating SAP BW systems to HANA, focusing on post-processing tasks required after the migration. It outlines general and HANA-specific post-processing tasks, including backup, configuring parameters, and checking system integrity. The document provides detailed steps and considerations necessary for a successful migration to ensure optimal operation within the new environment.
BW Migration to HANA Part 3 - Post-processing on the Migrated System
- 1. BW Migration to HANA Part 3 of 3 Post-processing on the Migrated System By OZSoft Consulting for ITConductor.com Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 1 Any DB Migrate Upgrade Preparation Post-processing
- 2. Introduction • This is Part 3 of the series of publication which provides an overview and explanation of major steps and considerations for BW on HANA migrations • Migrating a BW system from anyDB (any database) to HANA involves 1. Preparatory work in the BW system 2. SUM DMO Tool for SAP Upgrade and Migration 3. Post processing on the migrated system • This part focuses on post-processing, which includes standard tasks after upgrade and HANA- specific post-tasks. Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 2
- 3. Post-processing - general After migrating a BW system to HANA, there are two general groups of post-tasks 1. Standard tasks after a release upgrade or Unicode conversion 2. HANA-specific tasks After the downtime processing AND before doing anything: 1. Create a backup of the database 2. Configure HANA parameter log_mode to ‘normal’ 3. Configure HANA parameter enable_auto_log_backup to ‘YES’ Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 3
- 4. Standard post tasks Below are some post tasks after a release upgrade/or Unicode conversion. The list is not exhaustive, not necessarily in sequence, and does not include site-specific process. Note that the DMO tool, automatically run RS_BW_POST_MIGRATION during its post-processing phase, but there maybe a case of running some steps. Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 4 Adapt dialog instances to the new release/kernel Run SECSTORE (OSS note 816861) Run SICK Configure SAINT parallelism (OSS note 1309506) For each instances, run SM51 and SM21 RZ12 – configure number of free WPs Run SGEN (SAP_BASIS first, then the rest) DB13 – maintain standard jobs Reconfigure/adapt 3rd party products RSA1 – check source systems - activate Import profile parameters Solution Manager configuration
- 5. HANA-specific post-tasks • The cookbook, SAP First Guidance – DMO – BW on HANA lists down the tasks and steps in detail. • OSS notes, blogs that were referenced while doing the steps, (i.e. to get more background information), are added in this document. • Some of the tasks need to be a collaborative work with the BW Administrators and Security team. Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 5
- 6. HANA-specific post-tasks - 1 Task – Activate new HANA server functions (scriptserver) • Login to the system database container to adjust the scripserver section of the daemon.ini and nameserver.ini Task – Enable ‘Dynamic Range Partitioning’ feature of DataStore objects • Refer to OSS note 2081135 for background on this Dynamic Range Partitioning Task – Install Application Function Library (AFL) • For the brief on AFL, refer to SAP help page - AFL • For HANA Analysis Process (HAP) background, refer to First Guidance – SAP BW 7.40 powever by HANA - HANA Analysis Process Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 6
- 7. HANA-specific post-tasks - 2 Task – Configuring DBMS User Management for SAP HANA • This task need to be done in collaboration with the security team • For more detail/additional document, refer to DBMS Users in SAP NW ABAP 7.40 • Additional information – Configuring DBMS User Management for SAP HANA • SQL syntax to get the SQL_port for the connection information in DBCO select sql_port from sys.m.services where service_name = ‘indexserver’ • SQL syntax to list DBMS user’s assigned roles select * from effective_roles where user_name = ‘<DBMS_USER>’ • If you remove the assigned DBMS user through SU91, the DBMS user will notbe deleted from the HANA side. Remove it through program RSUSR_DBMS_USERS Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 7
- 8. HANA-specific post-tasks - 3 • DBMS roles that are available for DBMS users Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 8
- 9. HANA-specific post-tasks - 4 Task – Install Smart Data Access (SDA) Drivers • Reference: SAP help page – SDA Task – Transaction RS3HANA_CHECK/ADMIN • This is for SAP HANA view. For background, refer to SAP First Guidance - SAP BW 7.40 on HANA - View Generation Task – Create CDS views after migration • CDS stands for ‘Core Data services’ • For brief on CDS, see Enhanced ABAP development with CDS Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 9
- 10. HANA-specific post-tasks - 5 Task – RowStore to Column conversion • In our migration, only empty, temporary tables were listed during the check Task – Check HANA with DBACOCKPIT • No issue found Task – RS_BW_POST_MIGRATION • As the source system was already on 750/02, all mentioned OSS notes were already in place and no issue found. Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 10
- 11. HANA-specific post-tasks - 6 Task – ASU Tool box • There are some follow-up post-tasks Task – RSDU_TABLE_CONSISTENCY • For more information, refer to Table Consistency Check for BW Tables on HANA Task – RSDDB_INDEX_CREATE_MASS • For more information, refer to BWonHANA: InfoProvider column views Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 11
- 12. HANA-specific post-tasks – 7 Task - Migration Check – SHDB_MIGRATION_CHECK Task - RS_BW_POST_MIGRATION • If OSS note 2060342 has been implemented, then run step 12 ‘Create views for InfoProvider’. This was not performed since the system is already 7.50 Task - Repair inconsistent PSA tables No issue found Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 12 • Note 1785060 - Recommendations for performing the migration to SAP HANA
- 13. HANA-specific post-tasks - 8 Task - Regenerate all Transformations • For reference, see Transformation – Consistency check programs • Refer to OSS note 1408161 – Program for transformation activation The note refers to required input parameters • Transformation ID can be derived from table RSTRAN Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 13
- 14. HANA-specific post-tasks - 9 Task - Convert InfoCubes into in-memory optimized • It is highly recommended to convert existing InfoCubes to SAP HANA- optimized Infocubes to reduce the data load. Note that after the migration to HANA, all newly created InfoCubes will be automatically be SAP HANA- optimized Infocubes. • References: Converting Standard InfoCubes to SAP HANA-Optimized InfoCubes Aspects of the HANA-optimized InfoCube • To check if an infocube is optimized, go to RSA1, under Settings Subtype = ‘SAP HANA optimized Infocube’. Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 14
- 15. HANA-specific post-tasks - 10 Task – Migrate BW Workspaces • Report RS_BW_POST_MIGRATION – steps 12 - 15 For explanation on ‘Unload Priority’, refer to SAP BW on HANA: Data Classification Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 15
- 16. HANA-specific post-tasks - 11 The following tasks were not performed in our migration, some of them maybe required to take advantage of simpler data models on BW, and especially with the new BW/4HANA, just announced by SAP in Sep-2016: • Converting DataStore Objects and Infocubes into advanced DSO • Convert MultiProvider to CompositeProvider Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 16
- 17. Summary The SAP BW upgrade and migration to SAP HANA has over 100 steps, and each environment maybe a little different based on the usage scenario and customer specific data encountered. However, these publication seek to provide an overview of the processes for planning and guidance so that you can confidently create a roadmap for BW on HANA and even next generation BW/4HANA migration involving: • Preparation of the source BW system • Carrying out the SAP SUM (Software Update Manager) upgrade & migration using DMO (Database Migration Option) for the BW system from anyDB to BW on HANA. • Finally, post-processing on the Upgraded/Migrated System. GOOD LUCK! Author: Terry Kempis Editor: Linh Nguyen ITConductor.com 17
- 18. • Any Questions? • Contact Info: Linh Nguyen linh.nguyen@itconductor.com Terry Kempis terry.kempis@itconductor.com Let itconductor.com @itconductor 18