IT38792: ON UPDATABLE SECONDARY - A SELECT FOR UPDATE DOESN'T EXCLUDE ANOTHER SELECT FOR UPDATE ON SAME TABLE

APAR status

• Closed as program error.

Error description

• on updatable secondary, a select for update doesn't exclude
  another select for update on same table
  
  For example : Running below query in Primary
  
  select * from customer for update; in dbaccess in second session
  is throwing
  
  244: Could not do a physical-order read to fetch next row.
  107: ISAM error: record is locked.
  
  But same query is able to run in multiple sessions in Updatable
  Secondaries without locking the table and throwing any error.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of Informix Server prior to 12.10.xC16 and 14.10.xC8.  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Informix Server 12.10.xC16 or 14.10.xC8.          *
  ****************************************************************
  

Problem conclusion

• Fixed in Informix Server 12.10.xC16 and 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