IT36187: SERVER ASSERT FAIL IN VALSTORE_DEEPCOPY FROM QUERY USING UNION AND CONCAT OF CHARACTER FIELDS > 215 AND OTHER FIXED TYPES

APAR status

• Closed as program error.

Error description

• The following SQL reproduces the problem:
  
  create temp table p
  (
  pa1_name char(60) not null
  );
  insert into p values ("NAME");
  
    select
                   pa1_name ||
  
  'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' ||
  
  'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' ||
  
  'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' ||
  
                   'aaaaaa' || 1 from p
  
   union
  
   select
          " " as Description
  from p
  ;
  
  However the problem will only reproduce if the 0x1000 flag is
  NOT present in SQL_FEAT_CTRL2 (this flag is present by default)
  
  The stack from the asserting thread is as follows:
  
  afstack
  mt_ex_throw_sig
  afsig_handler
  <signal frame>
  valstore_deepcopy
  merge_next
  sort_open
  prepselect
  open_cursor
  sq_open
  sqmain
  spawn_thread
  th_init_initgls
  startup
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of Informix Server prior to 12.10.xC15 and 14.10.xC6.  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Informix Server 12.10.xC15 (when available) or    *
  * 14.10.xC6 (when available).                                  *
  ****************************************************************
  

Problem conclusion

• Fixed in Informix Server 12.10.xC15 and 14.10.xC6.
  

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