oracle11g ORA-01555 ON ACTIVE DATA GUARD

author：skate

time：2011/10/12


在oracle11g的active dataguard中，在备库运行一段时间，一般为几天，然后查询数据视图，数据库就hang很长时间，然后抛出错误：

ORA-00604: error occurred at recursive SQL level 1

ORA-01555: snapshot too old: rollback segment number 21 with name

"_SYSSMU21_3288119158$" too small



os的版本：Linux x86-64

oracle版本：

SQL> select * from v$version;

BANNER

--------------------------------------------------------------------------------

Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production

PL/SQL Release 11.2.0.2.0 - Production

CORE 11.2.0.2.0 Production

TNS for Linux: Version 11.2.0.2.0 - Production

NLSRTL Version 11.2.0.2.0 - Production



错误情况如下：

[root@db01 ~]# su - oracle

[oracle@db01 ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 11.2.0.2.0 Production on Wed Oct 12 11:51:53 2011

Copyright (c) 1982, 2010, Oracle. All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> select name,open_mode from v$database;

NAME OPEN_MODE

--------- --------------------

SL***EDB READ ONLY WITH APPLY

上面这个sql运行了好长时间才出来

SQL> show parameter mem

ORA-00604: error occurred at recursive SQL level 1

ORA-01555: snapshot too old: rollback segment number 21 with name

"_SYSSMU21_3288119158$" too small

SQL> SQL>

SQL>

SQL> show parameter log

ORA-00604: error occurred at recursive SQL level 1

ORA-01555: snapshot too old: rollback segment number 21 with name

"_SYSSMU21_3288119158$" too small

SQL> select * from tab;

select * from tab

*

ERROR at line 1:

ORA-00604: error occurred at recursive SQL level 2

ORA-01555: snapshot too old: rollback segment number 21 with name

"_SYSSMU21_3288119158$" too small

到oracle的metlink中查，发现是11.2.0.2.0 的bug : 10018789,下载p10018789_112020_Linux-x86-64.zip（424K）补丁修复。



官方文档如下：





Bug 11819223: ORA-01555 ON ACTIVE DATA GUARD

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Bug 属性



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类型 B - Defect 已在产品版本中修复 -

严重性 2 - Severe Loss of Service 产品版本 11.2.0.2.0

状态 36 - Duplicate Bug. To Filer 平台 226 - Linux x86-64

创建时间 28-Feb-2011 平台版本 NO DATA

更新时间 09-Mar-2011 基本 Bug 10018789

数据库版本 11.2.0.2.0

影响平台 Generic

产品源 Oracle



相关产品



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产品线 Oracle Database Products 系列 Oracle Database

区域 Oracle Database 产品 5 - Oracle Server - Enterprise Edition



Hdr: 11819223 11.2.0.2.0 RDBMS 11.2.0.2.0 DATAGUARD_ACTV PRODID-5 PORTID-226 ORA-1555 10018789

Abstract: ORA-1555 ON ACTIVE DATA GUARD

*** 02/28/11 12:37 pm ***

PROBLEM:

--------

Cusotmer gets ORA-1555 on Active data Guard when querying dictionary views

SQL> select count(*) from sysadm.ps_action_tbl;

select count(*) from sysadm.ps_action_tbl

*

ERROR at line 1:

ORA-604: error occurred at recursive SQL level 1

ORA-1555: snapshot too old: rollback segment number 472 with name

"_SYSSMU472_473248557$" too small

11:21:23 SQL> l1

1* select count(*) from sysadm.ps_action_tbl

11:21:24 SQL> /

select count(*) from sysadm.ps_action_tbl

*

ERROR at line 1:

ORA-604: error occurred at recursive SQL level 1

ORA-1555: snapshot too old: rollback segment number 472 with name

"_SYSSMU472_473248557$" too small

SQL> select tablespace_name,bytes/1024/1024/1024 from dba_data_files;

select tablespace_name,bytes/1024/1024/1024 from dba_data_files

*

ERROR at line 1:

ORA-604: error occurred at recursive SQL level 1

ORA-1555: snapshot too old: rollback segment number 54 with name

"_SYSSMU54_3751033121$" too small

these queries fail within 30 seconds, they dont cross the undo_retention

period

DIAGNOSTIC ANALYSIS:

--------------------

Per following document there is a bug on Active Data Guard in 11.2.0.2.0

ORA-1555 on Active Data Guard Standby Database (Doc ID 1273808.1)

I am uploading the trace files with the stack trace, please confirm.

WORKAROUND:

-----------

No workaround

RELATED BUGS:

-------------

Bug 10320455: QUERY IN ACTIVE DATA GUARD RETURNS ORA-1555

which is duplicate from

Bug 10092353: ACTIVE DATAGUAD INSTANCE HANGS DUE TO A LIBRARY CACHE LOCK

HOLDER

This is resolved by applying the fix for

Internal Bug 10018789: DBMV2-BIGBH:SPIN IN KGLLOCK CAUSED DB HUNG AND HIGH

LIBRARY CACHE LOCK







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