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IT25783: -901 ERROR WITH TEXT "WITH HOLD BUT USAGE LOCK ARGUMENT NULL" REPORTED BY SQLRLC_REQUEST_ULOCK() AS CALLED BY SQLRLC_FED_FETCH()

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APAR status

  • Closed as program error.

Error description

  • SELECT referencing SYSCAT.INDEX of a federated object might
    hang/crash with SQL0901N.
    
    -------Stack--------
    0x090000000057EF14 pthread_kill + 0xD4
    0x0900000040D15FFC sqloDumpEDU + 0x9C
    0x0900000041943630 sqldDumpContext__FP9sqeBsuEduiN42PCcPvT2 +
    0x150
    0x0900000042C59334 sqlrr_dump_ffdc__FP8sqlrr_cbiT2 + 0x914
    0x0900000040E741B8 sqlzeDumpFFDC__FP8sqeAgentUiP5sqlcai + 0x158
    0x0900000040E73C9C sqlzeSqlCode__FP8sqeAgentUiUlT2P5sqlcaiUsPc +
    0x27C
    0x0900000040E7078C sqlrrSqlCode + 0x18C
    0x0900000043397978
    sqlrlc_request_ulock__FP8sqlrr_cbP19sqlrlc_entry_commonP20sqlrlc
    _anchor_commonPbUiN25PUiP14SQLP_LOCK_INFOT9T8 + 0x1D8
    0x0900000043396EE4
    sqlrlc_find_request_usage_lock__FP8sqlrr_cbP10sqlrlc_keyUiN23PP1
    9sqlrlc_entry_commonPUiP14SQLP_LOCK_INFOT8 + 0x664
    0x090000004592F82C
    sqlrlc_fed_fetch__FP8sqlrr_cbPUcUsT2T3T2T3UiN28P13SQLO_MEM_POOLP
    14SQLP_LOCK_INFOP21sqlrlc_systables_info + 0x3AC
    0x090000004592D7E4
    sqlnq_cat_look2__FCP20sqlnq_multipart_nameCPP9sqlnq_ftbP3loc21sq
    lnq_hierarchy_usageCbCPCUiP12sqlnq_stringT5 + 0x4F04
    0x090000004592756C
    sqlnq_cat_look__FCP20sqlnq_multipart_nameCPP9sqlnq_ftbP3loc21sql
    nq_hierarchy_usageCbCPCUiP12sqlnq_stringT5 + 0x2EC
    0x090000004386B1F4
    sqlnq_handle_qtb_extref_rec__F20sqlnq_multipart_namePP9sqlnq_qtb
    iP3loc21sqlnq_hierarchy_usageP9sqlnq_pid + 0x114
    0x090000004386EA0C
    IPRA.$sqlnq_handle_named_ref__F20sqlnq_multipart_nameiP9sqlnq_qt
    bP9sqlnq_oprT2PP9sqlnq_qtbPP9sqlnq_qunPP9sqlnq_qncPP9sqlnq_pidT6
    Pi21sqlnq_hierarchy_usageP9sqlnq_pid + 0x4EC
    0x090000004386EDB8
    IPRA.$sqlnq_handle_named_ref__F20sqlnq_multipart_nameiP9sqlnq_qt
    bP9sqlnq_oprT2PP9sqlnq_qtbPP9sqlnq_qunPP9sqlnq_qncPP9sqlnq_pidT6
    Pi21sqlnq_hierarchy_usageP9sqlnq_pid + 0x898
    0x090000004386EDB8
    IPRA.$sqlnq_handle_named_ref__F20sqlnq_multipart_nameiP9sqlnq_qt
    bP9sqlnq_oprT2PP9sqlnq_qtbPP9sqlnq_qunPP9sqlnq_qncPP9sqlnq_pidT6
    Pi21sqlnq_hierarchy_usageP9sqlnq_pid + 0x898
    0x090000004386D81C
    sqlnq_handle_named_ref_in_src__FP12sqlnq_stringiPP9sqlnq_qtbPP9s
    qlnq_qunPP9sqlnq_qncPP9sqlnq_pidP3loc21sqlnq_hierarchy_usageP20s
    qlnq_multipart_nameP9sqlnq_pid + 0x2FC
    0x09000000442157DC
    sqlnq_handle_table_ref__FP20sqlnq_multipart_namePP9sqlnq_qunP9sq
    lnq_qtbP3locP9sqlnq_opr21sqlnq_hierarchy_usageP9sqlnq_pid +
    0xADC
    0x09000000442143F8
    sqlnq_handle_from_table_ref__FP20sqlnq_multipart_namePUciPP9sqln
    q_qunP9sqlnq_qtbP3locP9sqlnq_opr21sqlnq_hierarchy_usagePP8stknod
    e_ + 0xF8
    0x090000004430B0F0 sqlnq_sem__FPP8stknode_i10actiontypePUcP3loc
    + 0x7D70
    0x0900000044C7CFE4 sqlnp_smactn__FP8sqlnp_cbi + 0x424
    0x0900000044C74ED0 sqlnp_parser__FP8sqlnp_cb + 0x3D0
    0x0900000045D5C5A8
    sqlnp_main__FP12sqlnq_stringbP3locPP9sqlnq_qur + 0xDA8
    0x090000004571B174
    sqlnn_cmpl__FP8sqeAgentP11sqlrrstrings17sqlnn_compileModeT3P14sq
    lrr_cmpl_enviT7PP9sqlnq_qur + 0x8194
    ...
    ------------
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Db2 11.1 Fixpack 3 Mod 2 or higher                *
    ****************************************************************
    

Problem conclusion

  • First fixed in Db2 11.1 Fixpack 3 Mod 2
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT25783

  • 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

    2018-07-23

  • Closed date

    2018-08-07

  • Last modified date

    2018-08-07

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

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

    PH12085

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RB10 PSN

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
07 August 2018