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IT30411: IBM SSH SERVER'S SESSION CAN COME DOWN

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • When using Data Server Manager (DSM) a Job might fail because
    the SSH Server's session comes down.
    
    The Job Manager Log could show an exception like this:
    
    JobManagerLogger    (39571)    Aug 23, 2019 7:55:01 AM    ERROR
    JSchException in run() of DB2CLPRunner
    com.jcraft.jsch.JSchException: session is down
        at com.jcraft.jsch.Session.openChannel(Session.java:861)
        at
    com.ibm.datatools.shared.services.util.ssh.SSHUtility.recordOSTy
    pe(SSHUtility.java:361)
        at
    com.ibm.datatools.shared.services.util.ssh.SSHUtility.connectSSH
    Session(SSHUtility.java:332)
        at
    com.ibm.datatools.shared.services.util.ssh.SSHUtility.connectToH
    ost(SSHUtility.java:395)
        at
    com.ibm.datatools.jobmanager.execution.DB2CLPRunner.connectAndEx
    ecuteCommands(DB2CLPRunner.java:294)
        at
    com.ibm.datatools.jobmanager.execution.DB2CLPRunner.executeComma
    nds(DB2CLPRunner.java:225)
        at
    com.ibm.datatools.jobmanager.execution.DB2CLPRunner.run(DB2CLPRu
    nner.java:99)
        at
    com.ibm.datatools.sqwruntime.taskmgr.core.impl.TaskRunner.run(Ta
    skRunner.java:54)
        at java.lang.Thread.run(Thread.java:785)
    
    
    A mini-dump can get generated as well for the SSH Server that
    produces the following stack:
    
    sshd_worker!do_spawn+0x7e7
    sshd_worker!do_exec_no_pty+0x188
    sshd_worker!do_exec+0x15e
    sshd_worker!session_exec_req+0x74
    sshd_worker!session_input_channel_req+0xeb
    sshd_worker!server_input_channel_req+0x12f
    sshd_worker!dispatch_run+0x6c
    sshd_worker!server_loop2+0x14b
    sshd_worker!do_authenticated+0x3b
    sshd_worker!main+0xff1
    sshd_worker!__tmainCRTStartup+0x144
    kernel32!BaseThreadInitThunk+0x14
    ntdll!RtlUserThreadStart+0x21
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * all                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * upgrade to 11.4.6                                            *
    ****************************************************************
    

Problem conclusion

  • upgrade to v11.4.6
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT30411

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-09-26

  • Closed date

    2022-08-12

  • Last modified date

    2022-08-12

  • 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

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
12 August 2022