IT09622: SELECT ON SYSMASTER DATABASE IS MORE THAN 100 TIMES SLOWER AFTER UPGRADE TO 12.10

APAR status

• Closed as fixed if next.

Error description

• Select on sysmaster database is more than 100 times slower after
  upgrade to 12.10.
  Customer has a lot of databases and tables (total about 500-700
  thousand partitions).
  After upgrade from 11.50 to 12.10 all is going slower.
  
  Found following:
  
  select count(*) from sysmaster:systabnames;
  
  11.50.FC9
  
  Tables  200  2000  20000  200000
  runtime  2.880s  2.279s  3.222s  6.517s
  
  
  12.10.FC4W1
  
  Tables  200  2000  20000  200000
  runtime  4.633s  10.334s  227.489s 1057.387s
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * user of informix database server                             *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * upgrade to 12.10.xC5                                         *
  ****************************************************************
  

Problem conclusion

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels

• RA10 PSN

     UP

• RA10 PSY

     UP

• RB10 PSN

     UP

• RB10 PSY

     UP

• RB50 PSN

     UP

• RB50 PSY

     UP

• RB70 PSN

     UP

• RB70 PSY

     UP

• RC10 PSN

     UP

• RC10 PSY

     UP