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Informix - Problem description

Problem IT06304 Status: Closed

USING BTS_SEARCH IN A QUERY WHICH RETURNS AN ERROR CAUSES A MEMORY LEAK IN
THE TRX SESSION POOL

product:
INFORMIX SERVER / 5725A3900 / B70 - IDS 11.70
Problem description:
Using the bts_contains function in a Select query like this 
 
SELECT   gem_intern_id  FROM c_d_gemeente  WHERE 
    bts_contains(gem_naam, "Sint-pieters(") 
 
The query returns an error -937 as expected. When the query 
is running in a transaction and is executed again and again 
without closing the Transaction the Memory pool for the 
transaction is growing. 
 
TRX.72066.7  VX    7000000b0020040  12701696         5592 
102725     5 
TRX.72066.7  VX    7000000b0020040  19587072         7232 
158475     6 
 
Using a similar query which does not return an error in the 
bts_contains does not 
show a memory growth in the RTX memory pool.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* Users that are running a hundred or thousands of             * 
* bts_contain() predicates that have a bad query expression    * 
* parameter.                                                   * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Recommend fixing the bad contains predicate as it is very    * 
* costly to run a bts_contains scan to only generate           * 
* exceptions.  After the exception the transaction can be      * 
* closed with a commit or rollback and a new transaction       * 
* started and then the partially built up query in Clucene     * 
* memory would have been released.  Future releases of the     * 
* informix product will have a fix for the memory leak on a    * 
* bad query.  NOTE:  There was no memory leak with properly    * 
* formed queries.                                              * 
****************************************************************
Local Fix:
Solution
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
05.01.2015
16.10.2015
16.10.2015
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
12.10.xC5 FixList
12.10.xC5.W1 FixList