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 |
|
| 12.10.xC5.W1 |
|