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Strange problem with multiple JDBC connections
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Strange problem with multiple JDBC connections

  • Subject: Strange problem with multiple JDBC connections
  • From: Ken Anderson <email@hidden>
  • Date: Thu, 31 May 2007 10:05:41 -0400
All,

I've recently added a connection to an Oracle database from my primarily Sybase based application.  Multiple threads are operating and talking to both Sybase and Oracle through their respective JDBC drivers.  I just received this error:

EvaluateExpression failed: <com.webobjects.jdbcadaptor.SybasePlugIn$SybaseExpression: "SELECT t0.identifier, t0.oid, t0.priority_minutes_offset, t0.quote_oid, t0.rolling_quote_period_oid, t0.trans_id FROM quote_rolling_period t0 WHERE t0.quote_oid = ?" withBindings: 1:10(quoteOid)>:
    Next exception:SQL State:JZ006 -- error code: 0 -- msg: JZ006: Caught IOException: java.io.IOException: JZ0PA: The query has been cancelled and the response discarded.  The cancel was probably issued by another statement on the connection.
at com.webobjects.jdbcadaptor.JDBCContext._jdbcErrorWithChannel(JDBCContext.java:138)
at com.webobjects.jdbcadaptor.JDBCChannel._evaluateExpression(JDBCChannel.java:310)
at com.webobjects.jdbcadaptor.JDBCChannel.evaluateExpression(JDBCChannel.java:261)
at com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:185)


I have never seen anything like this before - it never occurred when I was not querying Oracle simultaneously.  Has anyone ever seen this?  Any hints?

Thanks,
Ken

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