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BP2 (4 KB TS): VPSIZE=82000 VPSEQT=50 DWQT=30 VDWQT=5
BP8K1 (8KB TS): VPSIZE=25000 VPSEQT=50 DWQT=30 VDWQT=5
BP16K1 (16KB TS): VPSIZE=10000 VPSEQT=50 DWQT=30 VDWQT=5
BP32K1 (32KB TS): VPSIZE=10000 VPSEQT=50 DWQT=30 VDWQT=5
BP3 (4KB indexes): VPSIZE=120000 VPSEQT=40 DWQT=30 VDWQT=5
BP4 (VB protocol): VPSIZE=1000 VPSEQT=10 DWQT=70 VDWQT=50
BP40 (LOB TS): VPSIZE=4000 VPSEQT=50 DWQT=50 VDWQT=10
Optional, for index compression or indexes with larger page size:
BP8K8 (8KB indexes): VPSIZE=20000 VPSEQT=40 DWQT=30 VDWQT=5
Installation considerations for backup and recovery
Determine a rolling maintenance policy that allows one DB2 subsystem at a time within a data
sharing group or single subsystem to be updated with the latest maintenance. For example,
maintain two copies of the system libraries (n, n+ 1) (SDSNLOAD, SDSNEXIT,
SDSNMACS,SDSNSPFP,...), and change system library names in the procedures (PROCs)
for the DB2 subsystem being updated. If each DB2 subsystem has its own set of libraries,
copy the SMP/E libraries to the system that you are updating. You can also use existing
procedures in DB2.
SAP database backup and restore
For backing up and restoring the SAP database, keep in mind the following considerations:
► Establish backup and recovery procedures for DB2 by using the following DB2 commands:
– BACKUP SYSTEM
– RESTORE SYSTEM
► In DB2 10 image copies are no longer necessary because of the ability to recover single
objects from system copy and because SYSLGRNX maintenance issues are resolved.
► Image copies are still used during online reorganizations (REORGs). Starting with V10,
you can use FlashCopy images for better performance.
The recommended daily image copy of the DB2 Catalog/Directory is, at a minimum, to
perform a volume copy by using the BACKUP SYSTEM command or FlashCopy.
► The DFSMShsm BCDS must have a record length of 6544. For more information, see
DFSMShsm Fast Replication Technical Guide, SG24-7069.
FlashCopy support: All storage vendors for System z support a FlashCopy technology,
but at different levels of integration with DB2.
Preparing DB2 for backup
To prepare DB2 for backups, use the following utilities:
► DB2 Managed FlashCopy Solution with the BACKUP SYSTEM and RESTORE SYSTEM
commands:
– Takes system-level copies of data and logs
– Uses SMS copy pools
– Uses the SMS backup pool
– Required SMS management of DB2 data and logs
Appendix B. Planning, preparing, and implementing the SAP landscape 191