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Date: Fri, 14 Sep 2007 09:45:32 -0700 (PDT)
From: "Kathey Marsden (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Created: (DERBY-3077) Trying to reconnect with derby client
 after bringing server down throws SQL Exception 58009 rather than 08XXX
 exception
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Trying to reconnect with derby client after bringing server down throws SQL Exception 58009 rather than 08XXX exception
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                 Key: DERBY-3077
                 URL: https://issues.apache.org/jira/browse/DERBY-3077
             Project: Derby
          Issue Type: Bug
            Reporter: Kathey Marsden


This issue was discussed in DERBY-401, because the case where the server is brought down and an application tries to reconnect does not throw a SQLNonTransientException.  Discussion is still underway about whether 58XXX exceptions should be SQLNonTransientExceptions, but at least for this case changing the exception to 08006 per Knut's suggestion should correct the problem for this case. See https://issues.apache.org/jira/browse/DERBY-401#action_12527400


Below is current stack and test case.

Apache Derby
got connection now sleep
now try to use the connection after you killed the nS
Exception in thread "main" java.sql.SQLException: A communications error has been detected: Software caused connection abort: recv failed.
at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown Source)
at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
at org.apache.derby.client.am.Connection.prepareStatement(Unknown Source)
at org.apache.derby.client.am.LogicalConnection.prepareStatement(Unknown Source)
at DerbyClientNonXA.main(DerbyClientNonXA.java:48)
Caused by: org.apache.derby.client.am.DisconnectException: A communications error has been detected: Software caused connection abort: recv failed.
at org.apache.derby.client.net.NetAgent.throwCommunicationsFailure(Unknown Source)
at org.apache.derby.client.net.Reply.fill(Unknown Source)
at org.apache.derby.client.net.Reply.ensureALayerDataInBuffer(Unknown Source)
at org.apache.derby.client.net.Reply.readDssHeader(Unknown Source)
at org.apache.derby.client.net.Reply.startSameIdChainParse(Unknown Source)
at org.apache.derby.client.net.NetStatementReply.readPrepareDescribeOutput(Unknown Source)
at org.apache.derby.client.net.StatementReply.readPrepareDescribeOutput(Unknown Source)
at org.apache.derby.client.net.NetStatement.readPrepareDescribeOutput_(Unknown Source)
at org.apache.derby.client.am.Statement.readPrepareDescribeOutput(Unknown Source)
at org.apache.derby.client.am.PreparedStatement.readPrepareDescribeInputOutput(Unknown Source)
at org.apache.derby.client.am.PreparedStatement.flowPrepareDescribeInputOutput(Unknown Source)
at org.apache.derby.client.am.PreparedStatement.prepare(Unknown Source)
at org.apache.derby.client.am.Connection.prepareStatementX(Unknown Source)
... 3 more
Caused by: java.net.SocketException: Software caused connection abort: recv failed
at java.net.SocketInputStream.read(SocketInputStream.java:129)
... 15 more


import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
import javax.sql.PooledConnection;

public class DerbyClientNonXA
{

public static void main(String args[]) throws Exception
{

org.apache.derby.jdbc.ClientConnectionPoolDataSource40 ds = new org.apache.derby.jdbc.ClientConnectionPoolDataSource40();

Connection conn = null;
ds.setDatabaseName("e:\\temp\\sampl127;create=true");

PooledConnection pooledCon = ds.getPooledConnection();

conn = pooledCon.getConnection();

DatabaseMetaData md = conn.getMetaData();
System.out.println(md.getDatabaseProductVersion());
System.out.println(md.getDatabaseProductName());
System.out.println("got connection now sleep. Bring down network server.");


Statement st = null;
PreparedStatement ps1 = null;
st = conn.createStatement();
try
{


st.executeUpdate("drop table TAB1");
}
catch (SQLException x)
{
System.out.println("no table exists");
}

Thread.sleep(15000);
System.out.println("now try to use the connection after you killed the nS");

ps1 = conn.prepareStatement("CREATE TABLE TAB1(COL1 INT NOT NULL)");
ps1.executeUpdate();

conn.commit();

System.out.println("done");

}
}


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