[Pljava-dev] java.lang.OutOfMemoryError

[Eric BOYER]

Thomas Hallgren a écrit :

>Eric,
>You limit the postmaster to use 64M memory per session.
>
A session is a the trigger ?

> That might be a 
>problem but it doesn't have to be. It all depends on what your server is 
>doing. I'm sure it's not the garbage collector (the first thing a JVM 
>does when it runs short of memory is to collect available garbage).
>
>You have to provide more information. The server log is generally far 
>more useful then the output from the client that you provided here. The 
>exact version of the PL/Java, PostgreSQL, and Java VM might be helpful 
>too. And of course, some hint of what you do when the error occurs.
>
>Common errors include storing tuple data in collections (and thereby 
>preventing them from being garbage collected). PL/Java 1.2 had a memory 
>leak that occured when you had functions that returned huge result sets.
>  
>
We use :
Postgres 8.1
Pljava 1.2.0
jdk 1.4

Our server launch trigger which launch trigger, etc ...
The treatment is long sometimes ...

The java code is a big application which have to manage informations for 
an information system

Eric

>Regards,
>Thomas Hallgren
>
>
>Eric BOYER wrote:
>  
>
>>Hello
>>
>>We use pl java to launch an application
>>
>>org.postgresql.util.PSQLException: ERREUR: java.lang.OutOfMemoryError
>>        at 
>>org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1512)
>>        at 
>>org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1297)
>>        at 
>>org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:188)
>>        at 
>>org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:437)
>>        at 
>>org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:339)
>>        at 
>>org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:331)
>>
>>We have a long treatment in a loop and the memory grow gradually up to a 
>>java.lang.OutOfMemoryError.
>>
>>What could be the problem ?
>>
>>- garbage collector ?
>>- vmoptions ? : pljava.vmoptions = '-Xmx64M'
>>
>>Our serveur have 1Go RAM and postmaster start with a low consumption of 
>>RAM and grow up to ~300M ...
>>
>>Thanks for your help
>>
>>Eric
>>
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>>  
>>    
>>
>
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>  
>