如何使用ErrorStack进行错误跟踪及诊断

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使用 ErrorStack 进行错误跟踪及诊断

在使用

数据库的过程中，可能会遇到各种各样的错误或异常，很多异常的提示并不具体，我们有必要了解一下的跟踪方式。

是提供的一种对于错误堆栈进行跟踪的方法，通过设置跟踪可以将一些错误的后台信息详尽地转储出来，写入跟踪文件，对于错误的研究与诊断非常有效。

ErrorStack40 1 2 Level1 + ProcessState

（显示所有，着重显示当前）

可以在实例级或会话级别设置，也可以在参数文件中设置，这个设置仅当某个特定的错误出现时才被触发，如设置事件的跟踪：

一个客户曾经出现如下错误，提示数据的精度超过允许值，是后台调度的任务：

Errors in file /admin/erpdb/bdump/erpdb1_j000_447020.trc:
ORA-01438: value larger than specified precision allowed for this column
ORA-06512: at line 1

SQLErrorStackSQLalter system set events= 1438 trace name errorstack forever,level 3

alter system set events= 1438 trace name errorstack off

Oracle 10gMon Jul 13 10:48:392009
Mon Jul 13 10:56:06 2009
ORA-01438: value larger than specified precision allowed for this column
Trace dumping is performing id=[cdmp_20090713105608]
OS Pid: 541528 executed alter system set events 1438 trace name Errorstackoff

SQLSQLSQLNumber***SESSION ID:(857.16304) 2009-07-13 10:56:06.429
ksedmp: internal or fatal error
Current SQL statement for this session:
—– PL/SQL Call Stack —–
handle number name
700000336a1a070 236 procedure ERP.PROC_AUTOBATPROC
700000342eb7c20 1 anonymous block

可以很容易地测试这一功能的使用，比如使用如下代码中的测试过程：

SQL connect eygle/eygle
Table created.
insert into t values(a,1)
ERROR at line 1:
SQL alter system set events 984 trace name errorstack off

Mon Jul 13 22:55:592009
Mon Jul 13 22:59:12 2009
ORA-00984: column not allowed here
OS Pid: 2431 executed alter system set events 984 trace name errorstack off

insert*** 2009-07-13 22:59:12.928
ORA-00984: column not allowed here
insert into t values(a,1)
calling call entry argument values in hex
——————– ——– ——————– —————————-

以下引用在 ITPUB 上的一个讨论，是使用 ErrorStack 跟踪解决问题的典型案例（原文链接指向 ITPUB）

Import: Release 10.2.0.1.0 – Production on Tue Mar 18 14:19:49 2008

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 – 64bit Production

Export file created by EXPORT:V10.02.01 via conventional path

. importing DBA_MGR s objects into DBA_MGR

IMP-00058: ORACLE error 1438 encountered

IMP-00028: partial import of previous table rolled back: 20501 rows rolled back

System altered

然后重新执行 IMP；

2、查看 UDUMP 下日志, 如下:

/opt/oracle/admin/orcl/udump/orcl_ora_32355.trc

With the Partitioning, OLAP and Data Mining options

System name:Linux

Release:2.6.9-22.ELsmp

Machine:x86_64

Redo thread mounted by this instance: 1

Unix process pid: 32355, image: oracle@zhx25.cccc.com (TNS V1-V3)

*** SESSION ID135.949) 2008-03-18 17:11:02.014

ksedmp: internal or fatal error

Current SQL statement for this session:

(PRTNO , SEQNO , SEQDESC , PRTEFLAG , SEQCC , SEQNXTNO , SEQDEPT , WKCCODE , WKCALTCODE , SEQSETHR , LAB_SEQSETHR , SEQRUNHR , LAB_SEQRUNHR , SEQQUEHR , LAB_SEQQUEHR , SEQTRANHR , LAB_SEQTRANHR , SEQNOQLTRAT , SEQCHGDAT , SEQCHGRSN , SEQCHGCTLR , MACHCODE , MACHALTCODE , RESCODE , KEYSEQ , SEQCRYLOT , INITOVERRATE , COMWORK , SEQLOTFLAG , SEQEFDAT , SEQIEFDAT , SEQEFLOTNO , SEQIEFLOTNO , SEQECONO , PRTSEQCST , SEQSELFCST , INVYORN , SEQQTY , SEQNOTE , NOPRTAVELZ , OUTSEQFLAG , WXCST , SEQGSCHGCTLR , SEQGSCHGDAT , SEQSHCTL , SEQSHDAT , SEQSHSIGN , PRICE , ACCNO , ROUSTAT , FIXMFLAG , BANCL (:1, :2, :3, :4, :5, :6, :7, :8, :9, :10, :11, :12, :13, :14, :15, :16, :17, :18, :19, :20, :21, :22, :23, :24, :25, :26, :27, :28, :29, :30, :31, :32, :33, :34, :35, :36, :37, :38, :39, :40, :41, :42, :43, :44, :45, :46, :47, :48, :49, :50, :51, :52)

calling

entry

location

point

…………

Offsi = 48, Offsi = 1440