IT30441: ASSERT FAILURE IN READAHEAD THREAD ON SECONDARY SERVER FOLLOWINGTRUNCATE TABLE OPERATION

APAR status

• Closed as program error.

Error description

• An assert failure may occur on a read-only secondary server for
  a readahead thread when the partition for which pages are being
  fetched into the buffer pool has recently been truncated.
  
  Extract from a sample AF:
  
  Assert Failed: No Exception Handler
   Who: Session(2092378, informix@idssvr, 0, 70000021b4a5238)
        Thread(303931660, readahead_17, 700000052812bc0, 10)
        File: mtex.c Line: 508
   Results: Exception Caught. Type: MT_EX_OS, Context: mem
   Action: Please notify IBM Informix Technical Support.
   See Also: /informixdump/af.a4f4ec16
  
  Stack for thread: 303931660 readahead_17
  
  (oninit)afstack
  (oninit)mt_ex_throw_sig
  (oninit)afsig_handler
  (oninit)buffget
  (oninit)buffget
  (oninit)ra_do_pagelist_req
  (oninit)readahead_daemon
  (oninit)th_init_initgls
  
  A restart of the secondary server will be required.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of Informix Server prior to 12.10.xC14 and 14.10.xC4.  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Update to Informix Server 12.10.xC14 or 14.10.xC4 (when      *
  * available).                                                  *
  ****************************************************************
  

Problem conclusion

• Fixed in Informix Server 12.10.xC14 and 14.10.xC4.
  

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