IT19279: SYSIBMADM.ENV_SYS_INFO RUNS SLOWER IN DB2 V10.5 BY 1 SECOND

Db2 Version 11.1 Mod 4 Fix Pack 5 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• The administrative view runs relatively slow in DB2 v10.5 . It
  takes 1 second samples and results in 1 second extra processing.
  
  $ time db2 "SELECT HOST_NAME , CURRENT SERVER FROM
  SYSIBMADM.ENV_SYS_INFO"
  
  HOST_NAME     2               
  ----------------   ----
  testhost            TEST            
  
    1 record(s) selected.
  
  real    0m1.67s
  user    0m0.01s
  sys     0m0.01s
  
  Ideally it should take few milliseconds to complete.
  

Local fix

• 1. SELECT HOST_NAME,  CURRENT SERVER
  FROM TABLE(SYSPROC.ENV_GET_SYS_INFO()) AS SYSTEMINFO
  
  
  
  
  or 
  
  
  
  
  2. Create new view in different schema:
  db2 "CREATE OR REPLACE VIEW DB2INST1.ENV_SYS_INFO              
  
  ( OS_NAME, OS_VERSION, OS_RELEASE, HOST_NAME, TOTAL_CPUS,      
  
  CONFIGURED_CPUS, TOTAL_MEMORY )                                
  
  AS                                                              
  
  SELECT  os_name, os_version, os_release, host_name, total_cpus,
  
  configured_cpus, total_memory                                  
  
    FROM TABLE(SYSPROC.ENV_GET_SYS_INFO()) as t                  
  
  WITH NO ROW MOVEMENT"                                          
  
                                                                 
  
  And then run following command:                                
  
                                                                 
  
  $ time db2 "SELECT HOST_NAME , CURRENT SERVER FROM
  DB2INST1.ENV_SYS_INFO"  
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher                *
  ****************************************************************
  

Problem conclusion

• First fixed in Db2 11.1 Mod 4 Fixpack 5
  

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

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RB10 PSN

     UP