IT39738: ON A VERY BUSY SYSTEM "ONSTAT -G SES NNN" DOES NOT PROVIDE SESSION DETAILS.

APAR status

• Closed as program error.

Error description

• The problem is observed on 14.10.xC7 Solaris Machine. On a busy
  system, if they run "onstat -g ses" report when sessions are
  being being added and/or destroyed
  we seem to have session control block structures in the list but
  they contain next/prev of null, resulting
  not to print some session details. Where as "onstat -g sql" on
  same session id is printing the details correctly.
  
  ex:
  -bash-4.4$ onstat -g ses 31087254
  
  IBM Informix Dynamic Server Version 14.10.FC7 -- On-Line (Prim)
  -- Up 12 days 02:38:38 -- 12967936 Kbytes
  
  2022-01-26 10:10:11
  
  
  Last 20 Sessions Terminated
  
  
  Ses ID Username          Hostname          PID   Time
  Reason
  
  20676719 scmroot           <host> -1    12/01/2022.21:11
  onmode z
  
  20688143 scmroot           <host> -1    12/01/2022.21:19
  onmode z
  
  
  -bash-4.4$ onstat -g sql 31087254
  
  
  IBM Informix Dynamic Server Version 14.10.FC7 -- On-Line (Prim)
  -- Up 12 days 02:38:44 -- 12967936 Kbytes
  
  2022-01-26 10:10:11
  
  
  
  Sess      SQL           Current           Iso Lock      SQL ISAM
  F.E.
  
  Id        Stmt type     Database          Lvl Mode      ERR ERR
  Vers Explain
  
  31087254  -             testdb    CR Wait 5    0   0   9.28 Off
  
  
  Current Role : db_role
  
  
  Last parsed SQL statement :
  
   select * from employee
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of Informix Server prior to 14.10.xC8.                 *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Informix Server 14.10.xC8.                        *
  ****************************************************************
  

Problem conclusion

• Fixed in Informix Server 14.10.xC8.
  

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

  INFORMIX SERVER

• Fixed component ID

  5725A3900

Applicable component levels