12c: ORA-07445: Exception Encountered: Core Dump [msqcol()+1698] for SQL Tuning Advisor
(Doc ID 2020916.1)
Last updated on NOVEMBER 14, 2023
Applies to:
Oracle Database - Standard Edition - Version 12.1.0.1 and laterOracle Database - Enterprise Edition - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
Alert log reports next error during automatic sql tuning advisor run:
Begin automatic SQL Tuning Advisor run for special tuning task "SYS_AUTO_SQL_TUNING_TASK"
...
ORA-07445: exception encountered: core dump [msqcol()+1340] [SIGSEGV] [ADDR:0x10] [PC:0x279C19C] [Address not mapped to object] []
...
ORA-07445: exception encountered: core dump [msqcol()+1340] [SIGSEGV] [ADDR:0x10] [PC:0x279C19C] [Address not mapped to object] []
The trace file shows characteristics like:
----- Current SQL Statement for this session (sql_id=bg3b1a8yb4xc8) -----
/* SQL Analyze(225,1) / Select * from <table_name>
----- PL/SQL Stack -----
----- PL/SQL Call Stack -----
object line object
handle number name
0x10ef426b0 12818 package body SYS.DBMS_SQLTUNE_INTERNAL
0xcaa91d20 7 SYS.WRI$_ADV_SQLTUNE
0x87b15490 602 package body SYS.PRVT_ADVISOR
0x87b15490 2679 package body SYS.PRVT_ADVISOR
0x10b419bf8 241 package body SYS.DBMS_ADVISOR
0x1094ceb68 937 package body SYS.DBMS_SQLTUNE
0x107e58110 19 anonymous block
----- Call Stack Trace -----
... msqcol msqopnws msqsellst msqsel qksdsAppendFroElem qksdsEInitCtx kkoatVerifyEst kkeAdjJoinPrefCard kkejcd kkojnp kkocnp kkooqb kkoqbc apakkoqb apaqbdDescendents ...
/* SQL Analyze(225,1) / Select * from <table_name>
----- PL/SQL Stack -----
----- PL/SQL Call Stack -----
object line object
handle number name
0x10ef426b0 12818 package body SYS.DBMS_SQLTUNE_INTERNAL
0xcaa91d20 7 SYS.WRI$_ADV_SQLTUNE
0x87b15490 602 package body SYS.PRVT_ADVISOR
0x87b15490 2679 package body SYS.PRVT_ADVISOR
0x10b419bf8 241 package body SYS.DBMS_ADVISOR
0x1094ceb68 937 package body SYS.DBMS_SQLTUNE
0x107e58110 19 anonymous block
----- Call Stack Trace -----
... msqcol msqopnws msqsellst msqsel qksdsAppendFroElem qksdsEInitCtx kkoatVerifyEst kkeAdjJoinPrefCard kkejcd kkojnp kkocnp kkooqb kkoqbc apakkoqb apaqbdDescendents ...
Changes
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |