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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3172) ConnectionEventListener.connectionErrorOccurred not being executed when SQLState 08006 Error is thrown
Date Thu, 08 Nov 2007 23:14:50 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12541170
] 

Kathey Marsden commented on DERBY-3172:
---------------------------------------

I had thought in 10.2 we had changed the client error codes to match embedded but apparently
not.  The code -4499 I don't believe has anything to do with DRDA, but is just the code used
by client for disconnect exceptions.  Options are:
1) To change that code to match embedded SESSION_LEVEL severity
2) To trigger a connectionError event for the -4499 exception.

I tend to think 1 might be a good option for trunk but is too risky for the 10.3 branch. There
I think 2 would be more appropriate.

> ConnectionEventListener.connectionErrorOccurred not being executed when SQLState 08006
Error is thrown
> ------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3172
>                 URL: https://issues.apache.org/jira/browse/DERBY-3172
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.3.1.4
>            Reporter: Stan Bradbury
>            Assignee: Mamta A. Satoor
>         Attachments: DerbyNotification2.java
>
>
> The attached program demonstrates the problem.  Using the ClientConnectionPoolDataSource40
with a connectionEventListener the defined method connectionErrorOccurred is not executed
after the Network Server is shutdown and activity is performed on a previously established
pooled connection.
> Program also demonstrates that the connectionClosed method is executed when the connection
is closed.
> To run the reproduction:
> 1) start network server (listening on default host/port and  -noSecurityManager specified)
> 2) run the program
> Output is:
>  > java DerbyNotification2
> 10.3.1.5 - (579866)
> Apache Derby
>  .got connection...check if connectionClosed method is called
> EVENT CALLED: Connection closed happened
>  . . .
>  . . .Get connection and issue test SQL statement
>  . . .AS EXPECTED: no table exists
>  . SHUTDOWN Network server and check if connectionErrorOccurred is called
> now try to use the connection after the NS is STOPPED
> SQLState is: 08006
> Error is: -4499
> Message is: Insufficient data while reading from the network - expected a minimum of
6 bytes and received only -1 bytes.  The connection has been terminated.
> Exception in thread "main" java.sql.SQLNonTransientConnectionException: Insufficient
data while reading from the network - expected a minimum of 6 bytes and received only -1 bytes.
 The connection has
>  been terminated.
>         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 DerbyNotification2.runTest(DerbyNotification2.java:64)
>         at DerbyNotification2.main(DerbyNotification2.java:87)
> Caused by: org.apache.derby.client.am.DisconnectException: Insufficient data while reading
from the network - expected a minimum of 6 bytes and received only -1 bytes.  The connection
has been termina
> ted.
>         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)
>         ... 4 more

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