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Status Future consideration
Created by Guest
Created on Sep 23, 2021

Add few more columns in Db2 Performance database

When we investigate performance issue, performance database is an useful source, because we can run SQL query against the tables to pull out data. But if few more columns could be added to the tables, it would greatly improve the productivity:


  1. in DB2PMFACCT_GENERAL, there are

CLASS1_CPU_TOTAL

CLASS1_SU_CPU

CLASS2_CPU_TOTAL

CLASS2_SU_CPU

but DB2PMSACCT_GENERAL does not have these equivalent columns, we wish the future release could add these.


2. Add CLASS3_SUSPENSION to DB2PMFACCT_GENERAL and DB2PMSACCT_GENERAL:

currently we have to sum up this by ourselves. (ref case: TS006883139)


3. When we investigate a performance issue, often we want to have an overview of the bufferpool activities such as BP_GETPAGES and BP_UPDATES. Currently we have to join DB2PMFACCT_GENERAL with FACCT_BUFFER, or DB2PMSACCT_GENERAL with SACCT_BUFFER. It's cumbersome. We wish a TOTAL BPOOL ACTIVITY column to be added in DB2PMFACCT_GENERAL and DB2PMSACCT_GENERAL.


Needed By Not sure -- Just thought it was cool
  • Admin
    SOO KIM
    Dec 31, 2021

    We propose to accept the first two bullets for “Future Consideration” (include the proposed columns in the “SAVE” table and add Class 3 suspension time to FILE and SAVE tables.)

    For bullet 3, we will partially accept for “Future Consideration” as follows: We will provide new BP (GBP) Total row in ACCOUNTING FILE/SAVE containing the (Group) Buffer Pool Total metrics as per Report (without the detail.) Would expect to create either a new sub-record type (“TOT” ?) or new unique BP-ID/name as well as to keep TOT4K, TOT8K, etc. values separate to enable viewing which BP type is involved in the performance issue being investigated. We could also provide a new SQL Join Query for joining Accounting_ [S|F] _General table and the BP record table with using the new BP-"TOT" ID