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Posted to derby-dev@db.apache.org by "Andrew McIntyre (JIRA)" <de...@db.apache.org> on 2006/04/24 22:56:13 UTC
[jira] Closed: (DERBY-966) creating a preparedStatement outside of
a Global tran using a ClientXADatasource will result in an "SqlException:
Cannot set holdability" if the statement is used in a Global transaction
[ http://issues.apache.org/jira/browse/DERBY-966?page=all ]
Andrew McIntyre closed DERBY-966:
---------------------------------
Fix Version: 10.1.3.0
Resolution: Fixed
> creating a preparedStatement outside of a Global tran using a ClientXADatasource will result in an "SqlException: Cannot set holdability" if the statement is used in a Global transaction
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-966
> URL: http://issues.apache.org/jira/browse/DERBY-966
> Project: Derby
> Type: Bug
> Components: Network Client
> Versions: 10.1.2.3, 10.2.0.0, 10.1.2.2, 10.1.3.0
> Reporter: Kathey Marsden
> Assignee: Daniel John Debrunner
> Priority: Critical
> Fix For: 10.2.0.0, 10.1.2.3, 10.1.3.0
> Attachments: derby966_diff.txt, derby966_status.txt
>
> creating a preparedStatement outside of a Global tran using
> an xa datasource will result in an exception if the statement
> is used in a Global (i.e. xa transaction).
> DERBY-346 and DERBY-8 may be relevant to this issue.
> User noted
> 1) setting the holdability on the connection to
> CLOSE_CURSORS_AT_COMMIT doesn't seem to be taken affect, since
> the problem is observed to happen even if I set the the
> holdability to CLOSE_CURSORS_AT_COMMIT before creating the
> statement. (maybe another bug)
> 2) setting the holdability to close_cursor_at_commit on the PS
> when creating it, doesn't seem to be affecting the outcome,
> this, not sure its even honored (maybe another bug)
> Test case is below:
> import java.sql.Connection;
> import java.sql.PreparedStatement;
> import java.sql.ResultSet;
> import java.sql.SQLException;
> import java.sql.Statement;
> import javax.sql.XAConnection;
> import javax.transaction.xa.XAException;
> import javax.transaction.xa.XAResource;
> import javax.transaction.xa.Xid;
> import com.ibm.db2.jcc.DB2Xid;
> class CursorHoldProblem
> {
>
> public static PreparedStatement pstmt = null;
> public static void main (String args [])throws Exception {
> org.apache.derby.jdbc.ClientXADataSource ds = new
> org.apache.derby.jdbc.ClientXADataSource();
>
> System.out.println("getting connection");
> ds.setDatabaseName("sample");
> //ds.setTraceFile("trace.out");
> ds.setConnectionAttributes("create=true");
> conn1 = ds.getConnection();
>
> System.out.println(conn1.getMetaData().getDatabaseProductVersion
> ());
>
> PreparedStatement ps1 = null;
> try
> {
> System.out.println("creating table");
> ps1 = conn1.prepareStatement("CREATE TABLE TAB1(COL1 INT NOT NULL)");
> ps1.executeUpdate();
> System.out.println("done creating table");
> conn1.commit ();
> } catch (SQLException x)
> {
> System.out.println ("table already exists");
> conn1.commit();
> }
>
> XAConnection pc1 = ds.getXAConnection();
> XAResource xar1 = pc1.getXAResource();
> Xid xid1 = createXid(11);
> Connection conn = pc1.getConnection();
> System.out.println("get Holidability returning: " +
> conn.getHoldability());
> conn.setHoldability(ResultSet.CLOSE_CURSORS_AT_COMMIT);
> //==> setting this has no affect
>
> doSelect(conn, 23);
>
> xar1.start(xid1, XAResource.TMNOFLAGS);
> doSomeWork1(conn, 66);
> doSelect(conn, 50);
> xar1.end(xid1, XAResource.TMSUCCESS);
> int prp1 = xar1.prepare(xid1);
> System.out.println("prp1 is: " + prp1);
> if (prp1 == XAResource.XA_OK)
> xar1.commit(xid1, false);
> }
>
> private static void doSomeWork1(Connection conn, int
> deptno) throws SQLException
> {
> Statement stmt = conn.createStatement();
> int cnt = stmt.executeUpdate("INSERT INTO tab1 VALUES (" + deptno + ")");
> System.out.println("No of rows Affected " + cnt);
> stmt.close();
> stmt = null;
> }
>
> private static void doSelect(Connection conn, int deptno)
> throws SQLException
> {
>
> if (pstmt == null)
> pstmt = conn.prepareStatement("select * from tab1");
> ResultSet rset1 = pstmt.executeQuery();
> while (rset1.next())
> {
> System.out.println("==>: " + rset1.getString(1));
> break;
> }
> }
>
> static Xid createXid(int bids) throws XAException {
> byte[] gid = new byte[1];
> gid[0] = (byte) 9;
> byte[] bid = new byte[1];
> bid[0] = (byte) bids;
> byte[] gtrid = new byte[64];
> byte[] bqual = new byte[64];
> System.arraycopy(gid, 0, gtrid, 0, 1);
> System.arraycopy(bid, 0, bqual, 0, 1);
> Xid xid = new DB2Xid(0x1234, gtrid, bqual);
> return xid;
> }
> }
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