Table 2-2 Meaning of Crosscheck Status

Status	Description
EXPIRED	Object is not found either in file system (for DISK) or in the media manager (for sbt). Note that for a backup set to be EXPIRED, all backup pieces in the set must be EXPIRED. Note: EXPIRED does not mean the same as OBSOLETE. 个人注释：obsolete:当备份或者副本根据保存策略而被丢弃的时候，就会被标记为该状态。 expired:使用crosscheck对备份进行校验，当备份或者副本被存储在rman目录中，但是并没有物理存在于备份介质上时，就会被标记为该状态
AVAILABLE	Object is available for use by RMAN. For a backup set to be AVAILABLE, all backup pieces in the set must have the status AVAILABLE.
UNAVAILABLE	Object is not available for use by RMAN. For a backup set to be UNAVAILABLE, all backup pieces in the set must have the status UNAVAILABLE.

RMAN的怪现象

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作者: haochunpeng(http://haochunpeng.itpub.net)
发表于:2005.10.28 10:19
分类: oracle
出处：http://haochunpeng.itpub.net/post/385/44223
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环境:9201 on windows2k
情况:更改了log_archive_dest_1后,crosscheck archivelog all;就会报告失败,可实际上是成功的,只不过是显示错误.

真弄不明白为什么?下面是全过程.

1 归档路径是默认位置:
SQL> show parameter log_archive_dest_1

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_1 string LOCATION=D:oracleoradatates
tarchive
log_archive_dest_10 string

2 此时有一个归档日志:
SQL> select count(1) from v$archived_log;

COUNT(1)
----------
1

3 更改归档路径:
SQL> alter system set log_archive_dest_1='LOCATION=D:oracleoradatatestarchiv
e1' scope=both;

系统已更改。

4 插入数据使数据库归档:
SQL> insert into test select * from test;

已创建24660行。

SQL> commit;

提交完成。

SQL> select count(1) from v$archived_log;

COUNT(1)
----------
1

SQL> insert into test select * from test;

已创建49320行。

SQL> select count(1) from v$archived_log;

COUNT(1)
----------
2

SQL> commit;

提交完成。

5 在rman中用crosscheck检查归档日志,2个归档日志都是失败的:
RMAN> crosscheck archivelog all;

释放的通道: ORA_DISK_1
分配的通道: ORA_DISK_1
通道 ORA_DISK_1: sid=14 devtype=DISK
对归档日志的验证失败
存档日志文件名 =D:ORACLEORADATATESTARCHIVE1_47.DBF 记录 ID=1 时间戳 =572866
683
对归档日志的验证失败
存档日志文件名 =D:ORACLEORADATATESTARCHIVE11_48.DBF 记录 ID=2 时间戳 =57286
6931
已交叉检验的 2 对象

6 试着同步一下,看行不行,结果不行,crosscheck还是失败:
RMAN> resync catalog;

正在启动全部恢复目录的 resync
完成全部 resync

RMAN> crosscheck archivelog all;

释放的通道: ORA_DISK_1
分配的通道: ORA_DISK_1
通道 ORA_DISK_1: sid=14 devtype=DISK
对归档日志的验证失败
存档日志文件名 =D:ORACLEORADATATESTARCHIVE1_47.DBF 记录 ID=1 时间戳 =572866
683
对归档日志的验证失败
存档日志文件名 =D:ORACLEORADATATESTARCHIVE11_48.DBF 记录 ID=2 时间戳 =57286
6931
已交叉检验的 2 对象

7 用list expired看看是否有失效的archive log,证明没有失效的archive log:
RMAN> list expired archivelog all;

说明与恢复目录中的任何存档日志均不匹配

8 更改语言环境试试,结果再次crosscheck,2个archive log 都成功了:
RMAN> exit

恢复管理器完成。

C:>set nls_lang=american_america.zhs16gbk

C:>rman catalog rman/rman@safe target /

Recovery Manager: Release 9.2.0.1.0 - Production

Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.

connected to target database: TEST (DBID=1870953724)
connected to recovery catalog database

RMAN> crosscheck archivelog all;

allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=9 devtype=DISK
validation succeeded for archived log
archive log filename=D:ORACLEORADATATESTARCHIVE1_47.DBF recid=1 stamp=57286
6683
validation succeeded for archived log
archive log filename=D:ORACLEORADATATESTARCHIVE11_48.DBF recid=2 stamp=5728
66931
Crosschecked 2 objects

9 不解,难道是bug?

10 进一步验证是语言显示的错误:
还是中文的环境,看备份archvielog是否成功:
RMAN> crosscheck archivelog all;

分配的通道: ORA_DISK_1
通道 ORA_DISK_1: sid=16 devtype=DISK
对归档日志的验证失败
存档日志文件名 =D:ORACLEORADATATESTARCHIVE1_47.DBF 记录
683
对归档日志的验证失败
存档日志文件名 =D:ORACLEORADATATESTARCHIVE11_48.DBF 记
6931
已交叉检验的 2 对象

RMAN> backup archivelog all format 'd:archive_bak%T.bak';

启动 backup 于 28-10月-05
当前日志已存档
使用通道 ORA_DISK_1
通道 ORA_DISK_1: 正在启动存档日志备份集
通道 ORA_DISK_1: 正在指定备份集中的存档日志
输入存档日志线程 =1 序列 =47 记录 ID=1 时间戳=572866683
输入存档日志线程 =1 序列 =48 记录 ID=2 时间戳=572866931
输入存档日志线程 =1 序列 =49 记录 ID=3 时间戳=572868387
通道 ORA_DISK_1: 正在启动段 1 于 28-10月-05
通道 ORA_DISK_1: 已完成段 1 于 28-10月-05
段 handle=D:ARCHIVE_BAK20051028.BAK comment=NONE
通道 ORA_DISK_1: 备份集已完成, 经过时间:00:00:02
完成 backup 于 28-10月-05

RMAN> list backup;

备份集列表
===================

BS 关键字 大小 设备类型占用时间 完成时间
------- ---------- ----------- ------------ ----------
616 12M DISK 00:00:02 28-10月-05
BP 关键字: 617 状态: AVAILABLE 标记:TAG20051028T100627
段名:D:ARCHIVE_BAK20051028.BAK

备份集 616 中的已存档日志列表
Thrd Seq 低 SCN 短时间 下一个 SCN 下一次
---- ------- ---------- ---------- ---------- ---------
1 47 48051 27-10月-05 68045 28-10月-05
1 48 68045 28-10月-05 68167 28-10月-05
1 49 68167 28-10月-05 68664 28-10月-05

结果是成功的.

11 删除归档路径中的归档,然后从备份中恢复.
RMAN> crosscheck archivelog all;

released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=9 devtype=DISK
validation failed for archived log
archive log filename=D:ORACLEORADATATESTARCHIVE1_47.DBF recid=1 stamp=57286
6683
validation failed for archived log
archive log filename=D:ORACLEORADATATESTARCHIVE11_48.DBF recid=2 stamp=5728
66931
validation failed for archived log
archive log filename=D:ORACLEORADATATESTARCHIVE11_49.DBF recid=3 stamp=5728
68387
Crosschecked 3 objects

RMAN> list expired archivelog all;

List of Archived Log Copies
Key Thrd Seq S Low Time Name
------- ---- ------- - --------- ----
602 1 47 X 27-OCT-05 D:ORACLEORADATATESTARCHIVE1_47.DBF
606 1 48 X 28-OCT-05 D:ORACLEORADATATESTARCHIVE11_48.DBF
614 1 49 X 28-OCT-05 D:ORACLEORADATATESTARCHIVE11_49.DBF

RMAN> restore archivelog all;

Starting restore at 28-OCT-05

using channel ORA_DISK_1
channel ORA_DISK_1: starting archive log restore to default destination
channel ORA_DISK_1: restoring archive log
archive log thread=1 sequence=47
channel ORA_DISK_1: restoring archive log
archive log thread=1 sequence=48
channel ORA_DISK_1: restoring archive log
archive log thread=1 sequence=49
channel ORA_DISK_1: restored backup piece 1
piece handle=D:ARCHIVE_BAK20051028.BAK tag=TAG20051028T100627 params=NULL
channel ORA_DISK_1: restore complete
Finished restore at 28-OCT-05

恢复成功了.说明了那个"失败"就是rman的语言显示问题.