Re: problem with storing BLOBs larger then 2MB

Try increasing the memory available to the jvm. the switch
is -Xmx<memorysize> as in: "java -Xmx56m myClass". This is a non-standard
option, but I've never encountered a jvm that it didin't work for.

-Nick

--------------------------------------------------------------------------
Nick Fankhauser  nickf@ontko.com  Phone 1.765.935.4283  Fax 1.765.962.9788
Ray Ontko & Co.     Software Consulting Services     http://www.ontko.com/


> -----Original Message-----
> From: pgsql-jdbc-owner@postgresql.org
> [mailto:pgsql-jdbc-owner@postgresql.org]On Behalf Of Michal Josifek
> Sent: Wednesday, February 13, 2002 8:19 AM
> To: pgsql-jdbc@postgresql.org
> Subject: [JDBC] problem with storing BLOBs larger then 2MB
>
>
> Hello,
> I have this problem. I need to store some files into my DB and
> there is (I mean) a problem with last (from jdbc.postgresql.org)
> stable jdbc driver (stable driver for pgsql 7.2, java2). When I
> try to store file larger than 2MB (2 132 220), exception
>
> java.lang.OutOfMemoryError
>         <<no stack trace available>>
> Exception in thread "main"
>
> occured on line "executeUpdate()".
>
>
> Thanks for help
>
> Michal Josifek
>
>
>
>
> Client computer:
> JDBC driver: last stable from jdbc.postgresql.org
> OS: w2k
> JDK: Sun 1.3.1_01
>
> Server computer:
> DB: stable 7.2
> OS: Linux RH 7.2
>
>
>
>
>
> Table SQL:
>
> CREATE TABLE "files" (
> "id" int4 DEFAULT nextval('"files_id_seq"'::text) NOT NULL,
> "name" varchar(250),
> "size" int4,
> "file" bytea,
> "note" varchar(50),
> CONSTRAINT "files_pkey" PRIMARY KEY ("id")
> ) WITHOUT OIDS;
>
>
>
>
>
>
> Sample code:
>
> /*
>  * db_test.java
>  *
>  */
>
> package tests;
>
> /**
>  *
>  * @author  Michal
>  * @version
>  */
>
> import java.util.*;
> import java.util.zip.*;
> import java.sql.*;
> import java.io.*;
>
> public class db_test {
>  private Connection conn;
>
>  /** Creates new db_test */
>     public db_test() {
>     }
>
>
>  public void writeFile(String strFileName,String strNote) throws
> java.lang.Exception {
>
>   File fil = new File(strFileName);
>   FileInputStream fis = new FileInputStream(fil);
>   System.out.println(fil.length());
>   PreparedStatement ps;
>
>    ps = this.conn.prepareStatement("insert into files
> (name,size,file,note) values(?, ?, ?, ?)");
>    ps.setString(1,fil.getName());
>    ps.setInt(2,(int)fil.length());
>    ps.setBinaryStream(3,fis,(int)fil.length());
>    ps.setString(4,strNote);
>
>   ps.executeUpdate();  // EXCEPTION LINE !!!!!
>   ps.close();
>   fis.close();
>   this.conn.commit();
>  }
>
>  /**
>    * @param args the command line arguments
>   */
>     public static void main (String args[]) throws java.lang.Exception {
>   Class.forName("org.postgresql.Driver");
>
>   db_test dbts = new db_test();
>
>   dbts.conn =
> DriverManager.getConnection("jdbc:postgresql://192.168.30.190:5432
> /postgres","user","pass");
>   dbts.conn.setAutoCommit(false);
>
>   dbts.writeFile("d:/java/openssl.tar.gz","Note");
>
>   dbts.conn.close();
>
>
>    }
>
> }
>
>
>
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