ERROR: SET TRANSACTION ISOLATION LEVEL must be called before any query

In addition to the error that I mentioned in my earlier post ("No results"
exception on executeQuery() - see below), I get the following when I try to
commit a connection:

java.sql.SQLException: ERROR: SET TRANSACTION ISOLATION LEVEL must be
called before any query

at org.postgresql.Connection.ExecSQL(Connection.java:548)
at org.postgresql.Connection.ExecSQL(Connection.java:415)
at org.postgresql.jdbc2.Connection.doIsolationLevel(Connection.java:412)
at org.postgresql.jdbc2.Connection.commit(Connection.java:226)
at
com.commnav.sbh.framework.persist.JDBCConnection.commit(JDBCConnection.java:
312)
at
com.commnav.sbh.framework.persist.ConnectionManager.commitConnections(Connec
tionManager.java:366)
at
com.commnav.sbh.framework.persist.ConnectionManager.removeConnectionManager(
ConnectionManager.java:204)
at com.commnav.sbh.objects.User.finalize(User.java:162)
at java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method)
at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:86)
at java.lang.ref.Finalizer.access$100(Finalizer.java:17)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:163)

-----Original Message-----
From: pgsql-jdbc-owner(at)postgresql(dot)org
[mailto:pgsql-jdbc-owner(at)postgresql(dot)org]On Behalf Of chris markiewicz
Sent: Thursday, August 16, 2001 12:47 PM
To: pgsql-jdbc(at)postgresql(dot)org
Subject: [JDBC] "No results" exception on executeQuery()

Hello. I just update my driver to the latest version (7.1-1.3). I am
seeing MANY of the following exception:

No results were returned by the query.
at org.postgresql.jdbc2.Statement.executeQuery(Statement.java:63)
at
com.commnav.sbh.framework.persist.JDBCEngine.executeQuery(JDBCEngine.java:22
1)
at
com.commnav.sbh.framework.persist.PersistenceObject.query(PersistenceObject.
java:1046)
...

I checked the history of this listserv and found some related but not quite
relevant stuff (part of the thread is below - it talks about using
executeUpdate for update/insert/delete)...

I am sometimes getting this exception even when there should be results
returned...

I appreciate any help.
chris

-----Original Message-----
From: pgsql-jdbc-owner(at)postgresql(dot)org
[mailto:pgsql-jdbc-owner(at)postgresql(dot)org]On Behalf Of
Brian_Williams(at)i2(dot)com
Sent: Tuesday, May 08, 2001 2:50 PM
To: pgsql-jdbc(at)postgresql(dot)org
Subject: [JDBC] "No results" exception on insert

Hello,

I have some code which is essentially doing the following:

Statement stmt;
ResultSet rs = stmt.executeQuery("insert into users values ( 'joe', 'blow'
)");

The values are inserted into the table correctly. I verified this using
psql:
"select * from users".

The problem is that the executeQuery throws an Exception. The message
is "No results were returned by the query":

No results were returned by the query.
at org.postgresql.jdbc2.Statement.executeQuery(Statement.java,
Compiled
Code)

My driver is "org.postgresql.Driver" from the jar file jdbc7.0-1.2.jar. I
think
the port version is 7.1 The platform is FreeBSD 4.2-RELEASE.
I am using linux jdk 1.2.2.

Can anyone give me any ideas?

Thanks,
Brian

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