RE: Postgres JDBC Driver : java.lang.OutOfMemoryError

There shouldn't be that many 8k blocks (I can think of only 2, PG_Stream and
the old tuple size limit).

Peter

-- 
Peter Mount
Enterprise Support Officer, Maidstone Borough Council
Email: petermount@maidstone.gov.uk
WWW: http://www.maidstone.gov.uk
All views expressed within this email are not the views of Maidstone Borough
Council


> -----Original Message-----
> From: adiddi@hss.hns.com [mailto:adiddi@hss.hns.com]
> Sent: Friday, December 08, 2000 1:53 PM
> To: pgsql-interfaces@postgresql.org
> Subject: RE: [INTERFACES]Postgres JDBC Driver :
> java.lang.OutOfMemoryError
> 
> 
> 
> 
> Hi Peter,
> 
> Thanks a lot. It worked : java -xmx128m my.app.classfile
> 
> So, it turned out to be the JVM  memory heap size issue - not 
> a JdbcDriver
> issue.
> 
> The resultset was really not that big !
> 
> But the jdbcDriver does have hardcoded values 8192 etc. at 
> lot of places in the
> PG_Stream, connection and other classes.
> 
> Thanks again
> Anil
> 
> 
> 
> 
> 
> 
> Peter Mount <petermount@maidstone.gov.uk> on 12/08/2000 05:11:42 PM
> 
> To:   Anil Diddi/HSS@HSS, pgsql-interfaces@postgresql.org
> cc:
> 
> Subject:  RE: [INTERFACES]Postgres JDBC Driver : 
> java.lang.OutOfMemoryError
> 
> 
> 
> 
> How big is the ResultSet?
> 
> By default the JVM alocates 64Mb of memory. To increase this, 
> you pass the
> -Xmx parameter to java, ie:
> 
> java -Xmx32m my.app.classfile
> 
> where 32m is 32Meg of memory maximum.
> 
> From SUN's docs:
> 
> -Xmsn
> Specify the initial size, in bytes, of the memory allocation 
> pool. This
> value must be a multiple of 1024 greater than 1MB. Append the 
> letter k or K
> to indicate kilobytes, or m or M to indicate megabytes. The 
> default value is
> 2MB. Examples:
>        -Xms6291456
>        -Xms6144k
>        -Xms6m
> 
> 
> -Xmxn
> Specify the maximum size, in bytes, of the memory allocation 
> pool. This
> value must a multiple of 1024 greater than 2MB. Append the 
> letter k or K to
> indicate kilobytes, or m or M to indicate megabytes. The 
> default value is
> 64MB. Examples:
>        -Xmx83886080
>        -Xmx81920k
>        -Xmx80m
> 
> --
> Peter Mount
> Enterprise Support Officer, Maidstone Borough Council
> Email: petermount@maidstone.gov.uk
> WWW: http://www.maidstone.gov.uk
> All views expressed within this email are not the views of 
> Maidstone Borough
> Council
> 
> 
> > -----Original Message-----
> > From: adiddi@hss.hns.com [mailto:adiddi@hss.hns.com]
> > Sent: Friday, December 08, 2000 10:50 AM
> > To: pgsql-interfaces@postgresql.org
> > Subject: [INTERFACES]Postgres JDBC Driver : 
> java.lang.OutOfMemoryError
> >
> >
> >
> >
> >
> > Hi ,
> >
> > Will appreciate any help in resolving the following exception:
> >
> > PostGreSQL : 7.0.2
> >
> > Exception occurred during event dispatching:
> > java.lang.OutOfMemoryError:
> >         at 
> org.postgresql.PG_Stream.ReceiveString(PG_Stream.java:250)
> >         at
> > org.postgresql.Connection.ReceiveFields(Connection.java:447)
> >         at org.postgresql.Connection.ExecSQL(Connection.java:419)
> >         at 
> org.postgresql.jdbc1.Statement.execute(Statement.java:269)
> >         at
> > org.postgresql.jdbc1.Statement.executeQuery(Statement.java:53)
> >         .....
> >
> > Thanks
> > Anil
> >
> >
> 
> 
> 
>