Re: error when using move, any suggestions?

From: Barry Lind <blind(at)xythos(dot)com>
To: Noel <noel(dot)faux(at)med(dot)monash(dot)edu(dot)au>
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: error when using move, any suggestions?
Date: 2002-12-19 18:20:40
Message-ID: 3E020DF8.7010609@xythos.com
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Noel,

I don't know if this is your problem or not, but your test program is
wrong. You should not be issuing a 'begin work' command in jdbc. The
proper jdbc way of doing this is to: connection.setAutoCommit(false);
...; connection.commit();

The driver behind the scenes is issuing the begin/commit/rollback
commands. Calling them explicitly is redundant and will result in errors.

thanks,
--Barry

Noel wrote:
> Hi all,
> I'm new to postgreSQL.
> I wrote a little test program to learn how to use fetch and move in
> postgreSQL.
>
> import blastDb.*;
> import java.sql.*;
> import java.io.*;
> import java.util.*;
> import java.lang.*;
>
> public class TestFetchSize
> {
> public static void main(String[] args)
> {
> try
> {
> BlastDB db = new BlastDB();
>
> Statement stmt =db.connection.createStatement();
> int counte = 0;
> stmt.execute("begin work");
> stmt.execute("declare test cursor for select id from region
> where protein_database = 1");
> ResultSet rs;
> stmt.execute("move forward 99 in test");
> while(stmt.execute("fetch forward 2000 in test"))
> {
> rs = stmt.getResultSet();
> if (rs.next())
> {
> ++counte;
> while (rs.next())
> {
> ++counte;
> }
> }
> else
> break;
>
> }
> System.out.println(counte);
> stmt.execute("end work");
> }
> catch (Exception e)
> {
> e.printStackTrace();
> System.out.println(e.getMessage());
> }
> }
> }
>
> It compiles ok, however when run i get this message:
> Unable to fathom update count MOVE
> at
> org.postgresql.core.QueryExecutor.receiveCommandStatus(QueryExecutor.java:182)
>
> at org.postgresql.core.QueryExecutor.execute(QueryExecutor.java:80)
> at org.postgresql.Connection.ExecSQL(Connection.java:398)
> at org.postgresql.jdbc2.Statement.execute(Statement.java:130)
> at TestFetchSize.main(TestFetchSize.java:25)
> Unable to fathom update count MOVE
>
> I've search the web and the archives, and the only thing close is the
> thread about a sim problem with INSERT:
> "Basically the driver was storing the oid in an int. The value you have
> is overflowing the value allowed for a signed int.
>
> thanks,
> --Barry "
>
> Is this the same problem ?
> Using 7.4 divers with JDBC3 support.
>
> Cheers
> Noel
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>

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