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Sybase and Direct Connect to ODBC

Posted on 2004-09-13
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Last Modified: 2006-11-17
We currently have Sybase 12.0 and Sybase 12.5 DB servers installed with the same application connecting to both. These servers both have proxy table mappings using a load balance Direct Connect 12.5 database server to access a Connx ODBC datasource. We are experiencing sporadic periods were the direct connect processes will shut down or either freeze up since have deployed this into production under a loaded environment. Was wondering if anyone had experience with direct connect to an ODBC datasource and had seen problems similar to this. We have turned on multiple trace flags but are unable to get any info in the trace files. The sybase servers are on unix and the direct connect servers are windows. Currently we are trying to get a windows debugger installed to capture any errors that may be happing at a OS level on the direct connect boxes. Any help is desparately needed, we are in a production situation.

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Question by:coynorris
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grant300 earned 2000 total points
ID: 12049684
See if you can get the DirectConnect people to send you the UNIX version of the DirectConnect server.  I think you will find that this not only helps your stability, it also improves your performance since you do not have to make a double hop for all of your database network traffic.  I understand there may be a difference in the license cost (probably why this flakey double hop thing was instituted in the first place) but, as you said, you are in a production situation.

The double hop is realy bad both for performance and for scalability.  You are doubling the amount of network traffic and  at least doubling the latency for every trip to the database and every data packet back.  I think once you pull the windows servers out of the middle you will be much happier with the results.

Bill
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