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From "Kathey Marsden (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-614) Execution failed because of a Distributed Protocol Error
Date Fri, 14 Oct 2005 14:35:46 GMT
    [ http://issues.apache.org/jira/browse/DERBY-614?page=comments#action_12332071 ] 

Kathey Marsden commented on DERBY-614:
--------------------------------------

The server side tracing information is on the Wiki page as weel.

Looking briefly at your trace and at the splitQRYDTA code it looks like splitQRYDTA assumes
it is going to get a CNTQRY after sending each  block of data, but in fact in this case the
client is sending a CLSQRY.  Also from the comment  in that function there seems to be something
funny about the fact that we are getting the CNTQRY at all.   

See  the DDM manual (Volume 3) take a look at LMTBLKPRC -  Limited Block Protocol.
for a description of the protocol flow for result  sets to see what the actual flow should
be here and then we'll figure out how to make it so.



> Execution failed because of a Distributed Protocol Error
> --------------------------------------------------------
>
>          Key: DERBY-614
>          URL: http://issues.apache.org/jira/browse/DERBY-614
>      Project: Derby
>         Type: Bug
>   Components: Network Server
>     Versions: 10.1.1.0
>  Environment: Linux 2.4, Sun JDK 1.4.2_07, full SYSINFO will be attached.
>     Reporter: Bryan Pendleton
>  Attachments: clientStack.txt, derbyTrace.txt, query.txt, sysinfo.derby
>
> I am intermittently receiving Distributed Protocol Error exceptions in my client code.
Simultaneously,
> my derby.log is recording Distributed Protocol Error exceptions on the server side.
> I cannot reliably reproduce this problem. 
> However, the problem always occurs in the same section of my application, so I can at
least
> describe that section of my application. (I'll do so in an attachment).
> Here is the error I receive on the server side. Sometimes, the CODPNT is 2116 and the
> Error Code Value is 1d, rather than 2114 and e.
> 2005-10-05 02:10:23.663 GMT Thread[DRDAConnThread_2,5,main] (DATABASE = BuildFar
> m), (DRDAID = GA0A0026.P7E6-4182154075488704215{136532}), Execution failed becau
> se of a Distributed Protocol Error:  DRDA_Proto_SYNTAXRM; CODPNT arg  = 2114; Er
> ror Code Value = e
> Execution failed because of a Distributed Protocol Error:  DRDA_Proto_SYNTAXRM;
> CODPNT arg  = 2114; Error Code Value = e
> 2005-10-05 02:10:23.663 GMT Thread[DRDAConnThread_2,5,main] (DATABASE = BuildFar
> m), (DRDAID = GA0A0026.P7E6-4182154075488704215{136532}), null
> null
> org.apache.derby.impl.drda.DRDAProtocolException
>         at org.apache.derby.impl.drda.DRDAConnThread.throwSyntaxrm(Unknown Sourc
> e)
>         at org.apache.derby.impl.drda.DRDAConnThread.missingCodePoint(Unknown So
> urce)
>         at org.apache.derby.impl.drda.DRDAConnThread.parseCNTQRY(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.splitQRYDTA(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.writeFDODTA(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.writeQRYDTA(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Sou
> rce)
>         at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)

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