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Performance, Scalability and HA Optimizing the performance of OTM / G-Log, configuring Scalability (SCA) and maintaining High Availability.

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Old October 16th, 2008, 12:47
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Performance Degradation

Hi Friends,

Its been a while since I posted here. I have come back today with a problem and in need of your help.

One of our instance is giving serious performance problems. The application response degrades so badly, that it requires a complete bounce of the middle tier and database to make the system function again. I noticed that weblogic server threads gets stuck often. While starting the weblogic service, I found the following message in the weblogic.log file.
---------------------------------------------------------------------------------------------------
####<Oct 16, 2008 12:40:25 PM BST> <Warning> <Socket> <wrohstsco10> <gc3-wrohstsco10> <ListenThread.Default> <<WLS Kernel>> <> <BEA-000402> <There are: 9 active sockets, but the maximum number of socket reader threads allowed by the configuration is: 8. You may want to alter your configuration.>
---------------------------------------------------------------------------------------------------

But, NativeIOEnabled is set to true in the config.xml. We are stuck and have no clue about how to proceed. Any help will be greatly appreciated.

Tech Stack:OTM 5.5CU3 Weblogic 8.1MP4

Regards
Senthil Nathan M
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Old November 24th, 2008, 17:05
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Re: Performance Degradation

Hello,

You will find the solution to this error here:
http://www.otmfaq.com/forums/f27/sol...er-thread-218/ ([SOLVED] WebLogic Error: &lt;BEA-000402&gt; maximum of number of socket reader thread)

However - this will not resolve your current performance issues. It sounds like you may have GC (garbage collection), thread blocking, agent contention and possible DB query issues - if you're having to restart all of OTM including the DB in order to resolve.

--Chris
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