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Thread: thread pool exhausted (IMAP)

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  1. #1
    Join Date
    Oct 2009
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    Default thread pool exhausted (IMAP)

    I got some error like this in mailbox.log :
    Code:
    2011-07-05 22:23:02,225 WARN  [ImapSSLServer] [] TcpServer/993 - Thread pool is 105% utilized.  21 out of 20 threads in use.
    2011-07-05 22:23:02,225 ERROR [ImapSSLServer] [] TcpServer/993 - cannot handle connection; thread pool exhausted
    java.util.concurrent.RejectedExecutionException
            at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:1768)
            at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:767)
            at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:658)
            at com.zimbra.cs.tcpserver.TcpServer.run(TcpServer.java:202)
            at java.lang.Thread.run(Thread.java:662)
    zmprov gs -------- zimbraImapNumThreads
    Code:
    # name ------
    zimbraImapNumThreads: 500
    result free command :
    Code:
                 total       used       free     shared    buffers     cached
    Mem:      10233868    9973108     260760          0     374512    3718400
    -/+ buffers/cache:    5880196    4353672
    Swap:     12289716        144   12289572
    This problem caused Outlook error :
    Code:
    Task 'Synchronizing subscribed folders for ---@----.' reported error (0x800CCC0E) : 'Outlook cannot synchronize subscribed 
    folders for ---@----. Error: Cannot connect to the server. If you continue to receive this message, contact your server 
    administrator or Internet service provider (ISP).'
    How i can resolve this problem.
    Thank you.

  2. #2
    Join Date
    Feb 2013
    Posts
    1
    Rep Power
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    Default

    I also have this problem. I already increased the number of threads from 200 to 1200 but it still exceeds the 1200 after restarting the server. Our zimbra is ver 7.1.3_GA_3346. Can anyone help me on how to fix this issue?

  3. #3
    Join Date
    Aug 2008
    Posts
    6
    Rep Power
    7

    Default

    Quote Originally Posted by agv616 View Post
    I also have this problem. I already increased the number of threads from 200 to 1200 but it still exceeds the 1200 after restarting the server. Our zimbra is ver 7.1.3_GA_3346. Can anyone help me on how to fix this issue?
    i have this problem too recently. I noticed this problem occured when some of our client are using Blackberry Z10. Could it be roots of this problem?

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