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Set DB2_USE_FAST_PREALLOCATION on the stogroup level

We would like to have an option to set the allocation of a FS at a SG level to fast pre-allocation. We have large DMS temporary tablespaces that on a failover to our remote site, we rebuild from scratch.

when rebuilding a large DMS temp FS (800GB), it could take 20 -30 minutes and this delays our failover time.

  • Avatar32.5fb70cce7410889e661286fd7f1897de Guest
  • Apr 1 2020
  • Under Review
Db2
Who would benefit from this IDEA? Anyone wih large DMS temp FS's who recrecrate on a failover from scratch.
How should it work?

alter stogroup temp_sg fast_preallocation=on;

Idea Priority Medium
Priority Justification Currently, we have ext4 FS and they are all set to fast preallocation, which affects insert perfromance when the extents need to be allocated.
Customer Name Howard Goldberg
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