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7.0

java.sql.SQLException: Io exception: Protocol violation in Jrun4 with Oracle10g

Asked by todd_farmer in Java Programming Language

Tags: protocol, violation, type

Hi,

I'm having difficulty with this error.  The stack trace is below:
 com.mycompany.exception.DomainException: java.sql.SQLException: Io exception: Protocol violation
      at com.mycompany.database.DAO.implementation.UserDbDAO.getUsersByCriteria(UserDbDAO.java:400)
      at com.mycompany.web.struts.action.UserSearchAction.execute(UserSearchAction.java:56)
      at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
      at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
      at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
      at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91)
      at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
      at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:252)
      at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:527)
      at jrun.servlet.http.WebService.invokeRunnable(WebService.java:168)
      at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:451)
      at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
Caused by: java.sql.SQLException: Io exception: Protocol violation
      at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:170)
      at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:212)
      at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:325)
      at oracle.jdbc.driver.OracleStatement.prepare_for_new_result(OracleStatement.java:2606)
      at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:402)
      at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:344)
      at jrun.sql.JRunPreparedStatement.executeQuery(JRunPreparedStatement.java:69)
      at com.mycompany.database.DAO.implementation.UserDbDAO.getUsersByCriteria(UserDbDAO.java:294)
      ... 14 more
 

 javax.servlet.ServletException: java.sql.SQLException: Io exception: Protocol violation
      at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
      at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
      at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
      at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
      at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91)
      at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
      at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:252)
      at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:527)
      at jrun.servlet.http.WebService.invokeRunnable(WebService.java:168)
      at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:451)
      at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
 

The error indicates a problem within the com.mycompany.database.DAO.implementation.UserDbDAO.getUsersByCriteria() method.  The line referenced is:

            rs = ps.executeQuery();

The ps variable is a PreparedStatement that is set earlier.  I have test cases that execute outside of my AS (JRun4), and they consistently return correctly.  The problem appears only when I run the search through the web application - using the same exact parameters as my test case.  Both are consistent - test case consistently works, JRun consistently fails.

The database table that is being searched resides on an Oracle 10g database, and contains a column defined as a LONG data type.  I initially thought that this might be the cause of the problem, but found that I don't have issues with other methods that return the same exact columns using different criteria.

I've checked various resources online, and have not found a solution.  Any ideas?

[+][-]04/05/06 12:36 PM, ID: 16385535Accepted Solution

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About this solution

Zone: Java Programming Language
Tags: protocol, violation, type
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Solution Provided By: fargo
Participating Experts: 2
Solution Grade: A
 
[+][-]04/05/06 12:20 PM, ID: 16385342Assisted Solution

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[+][-]04/05/06 12:22 PM, ID: 16385373Expert Comment

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[+][-]04/05/06 12:32 PM, ID: 16385491Author Comment

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[+][-]04/05/06 12:40 PM, ID: 16385583Expert Comment

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[+][-]04/05/06 12:42 PM, ID: 16385614Author Comment

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[+][-]04/05/06 01:08 PM, ID: 16385929Author Comment

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[+][-]04/05/06 01:56 PM, ID: 16386379Author Comment

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