IBM Support

IT37803: ASSERT FAILED IN RSS_RECV THREAD IN CLONESOURCERECVTHREAD WHEN PRIMARY/RSS NODES EXPERIENCING CONNECTIVITY ISSUES

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APAR status

  • Closed as program error.

Error description

  • From the MSGPATH file we can see the servers trying to
    disconnect:
    
    02:19:13  The SMX connection between high availability servers
    was closed because the
     peer server was unresponsive for the timeout period (60 seconds
    times the
     number of retries).
    02:19:13  The SMX connection between high availability servers
    was closed because the
     peer server was unresponsive for the timeout period (60 seconds
    times the
     number of retries).
    02:19:13  The SMX connection between high availability servers
    was closed because the
     peer server was unresponsive for the timeout period (60 seconds
    times the
     number of retries).
    02:19:14  Error receiving a buffer from RSS rss_server01 -
    shutting down
    
    In the assertion fail file, you will likely only see a partial
    stack, which is due to the fact that an unexpected error message
    gets sprintf'd into a local variable that is not large enough to
    hold it.  This corrupts the stack frames and impacts the ability
    of the stack to unwind.  Here's the partial stack:
    
     ucontext: 0x0000000114205c40
      siginfo: 0x0000000114205f20
               si_signo: 10  si_code: 1   si_errno: 0 si_pid:
    1668573551 si_uid: 0
               si_addr: 0x6374696f6e2073cd si_value:
    0x0000000000000000  si_fd: 1668573551
    
    0x101021b40 oninit :: cloneSourceRecvThread + 0xb40
    sp=0x237e46b00(0x20696e2074686520, 0x73716c686f737473,
    0x2066696c652c2074, 0x68656e2073657474, 0x696e672053365f55,
    0x53455f52454d4f54)
    
    Following the above MSGPATH output, the server does seem to
    print an unexpected message into MSGPATH that seems like it's
    the output for an onconfig parameter description like this:
    
    02:19:14  Error receiving a buffer from RSS rss_server01 -
    shutting down
    02:19:14       Used with the REMOTE_SERVER_CFG configuration
    parameter, the
         S6_USE_REMOTE_SERVER_CFG configuration parameter specifies
    the
         file used to authenticate secure server connections in an
    untrusted
         network environment.
    
         The REMOTE_SERVER_CFG configuration parameter is used to
    specify
         the name of a file that lists the remote server hosts that
    are
         trusted by the computer on which the database server
    resides. If
         one or more of the servers specified in the
    REMOTE_SERVER_CFG
         file is configured using the connection security option
    (s=6)
         in the sqlhosts file, then setting S6_USE_REMOTE_SERVER_CFG
    to 1
         specifies that the servers in the REMOTE_SERVER_CFG are
    trusted
         connections. If S6_USE_REMOTE_SERVER_CFG is set to 0, then
    the
         $INFORMIXDIR/etc/host.equiv file is used to authenticate
    servers
         connecting through a secure port (as defined by setting s=6
    in the
         sqlhost file).
    
    02:19:14  invoke_alarm(): INFO: 1000 bytes in buffer but need
    1045
    02:19:14  RSS Server rss_server01 - state is now disconnected
    02:19:14  Assert Failed: No Exception Handler
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of Informix Server prior to 12.10.xC15 and 14.10.xC7.  *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Informix Server 12.10.xC15 or 14.10.xC7 (when     *
    * available).                                                  *
    ****************************************************************
    

Problem conclusion

  • Fixed in Informix Server 12.10.xC15 and 14.10.xC7.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT37803

  • Reported component name

    INFORMIX SERVER

  • Reported component ID

    5725A3900

  • Reported release

    C10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2021-07-28

  • Closed date

    2021-08-26

  • Last modified date

    2021-08-26

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    INFORMIX SERVER

  • Fixed component ID

    5725A3900

Applicable component levels

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"C10"}]

Document Information

Modified date:
27 August 2021