oracle10g数据库热备份,Oracle数据库热备份文件过大收缩方法
ORA-00257: archiver error. Connect internal
only, until freed.
Oracle 10g数据库物理空间管理方式与以前Oracle发生了变化，对归档日志所在的Flash_Recovery_Area空间进行了另外限制
Flash_Recovery_Area空间缺省安装时比较小，只有2GB，容易用完
解决过程
根据数据库目前可用存储空间情况、FLASH_RECOVERY_AREA空间为2GB的实际情况，把FLASH_RECOVERY_AREA的空间修改为20GB()。
SQL> alter system set
DB_RECOVERY_FILE_DEST_SIZE=20g;
系统已更改。
(其实问题的本质是归档日志的使用已经达到了spfile等启动参数文件中指定的最大值。oracle 10g中归档日志默认的存放地是闪回目录，即%ORACLE_BASE%/flash_recovery_area的相应实例名下面，这个位置的大小在参数文件中有个限制，解决空间不足的问题可以通过两种方式来实现，一个修改这个大小限制，还有一个就是修改归档日志存放位置。)
如果不要这些archivelog的话，可以删除一些
rman>DELETE NOPROMPT ARCHIVELOG UNTIL
TIME 'SYSDATE-3';直接运行这条
这样会只保留三天的归档
sql> select * from
v$flash_recovery_area_usage;
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
-------------------------------
------------------------------------------------------------------------------------------ -------------------------------
CONTROLFILE000
ONLINELOG000
ARCHIVELOG6.110 3
BACKUPPIECE000
IMAGECOPY00 0
FLASHBACKLOG000
Rman Crosscheck删除失效归档
当手工删除了归档日志以后，Rman备份会检测到日志缺失，从而无法进一步继续执行。
所以此时需要手工执行crosscheck过程，之后Rman备份可以恢复正常。
1.Crosscheck日志
$
rman target /
Recovery Manager: Release 9.2.0.4.0 - 64bit Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
connected to target database: AVATAR2 (DBID=2480694409)
RMAN> crosscheck archivelog all;
using target database controlfile instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=25 devtype=DISK
validation failed for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2714.dbf
recid=2702 stamp=545107659
validation failed for archived log
archive log
filename=/opt/oracle/oradata/avatar2/archive/1_2715.dbf recid=2703
stamp=545108268
...........
validation failed for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2985.dbf
recid=2973 stamp=545399327
validation
succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2986.dbf
recid=2974 stamp=545400820
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2987.dbf
recid=2975 stamp=545401757
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2988.dbf
recid=2976 stamp=545402716
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2989.dbf
recid=2977 stamp=545403661
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2990.dbf
recid=2978 stamp=545404946
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2991.dbf
recid=2979 stamp=545406220
Crosschecked 278 objects
RMAN>
2.使用delete expired
archivelog all命令删除所有过期归档日志:
RMAN> delete expired archivelog all;
released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=12 devtype=DISK
List of Archived Log Copies
Key Thrd Seq S Low Time Name
------- ---- ------- - --------- ----
3761 2714 X 23-NOV-04
=/opt/oracle/oradata/avatar2/archive/1_2714.dbf
.....
3.简要介绍一下report obsolete命令
使用report obsolete命令报告过期备份
RMAN> report obsolete;
RMAN retention policy will be applied to the command
RMAN retention policy is set to redundancy 1
Report of obsolete backups and copies
Type Key Completion Time Filename/Handle
-------------------- ------ ------------------ --------------------
Backup Set 125 01-NOV-04
Backup Piece 125 01-NOV-04 /data1/oracle/orabak/full_1_541045804
Backup Set 131 04-NOV-04
Backup Piece 131 04-NOV-04/data1/oracle/orabak/full_AVATAR2_20041104_131
....
Backup Set 173 06-DEC-04
Backup Piece 173 06-DEC-04/data1/oracle/orabak/full_AVATAR2_20041206_173
Backup Set 179 11-DEC-04
Backup Piece 179 11-DEC-04 /data1/oracle/orabak/arch544588206.arc
.....
Backup Piece 189 17-DEC-04/data1/oracle/orabak/arch545106606.arc
Backup Set 190 17-DEC-04
Backup Piece 190 17-DEC-04 /data1/oracle/orabak/arch545106665.arc
Backup Set 191 20-DEC-04
Backup Piece 191 20-DEC-04/data1/oracle/orabak/arch_AVATAR2_20041220_194
Archive Log 2973 20-DEC-04/opt/oracle/oradata/avatar2/archive/1_2985.dbf
Archive Log 2971 20-DEC-04/opt/oracle/oradata/avatar2/archive/1_2984.dbf
.....
Archive Log 2705 17-DEC-04/opt/oracle/oradata/avatar2/archive/1_2717.dbf
Archive Log 2704 17-DEC-04/opt/oracle/oradata/avatar2/archive/1_2716.dbf
Archive Log 2703 17-DEC-04/opt/oracle/oradata/avatar2/archive/1_2715.dbf
Archive Log 2702 17-DEC-04 /opt/oracle/oradata/avatar2/archive/1_2714.dbf
4.使用delete obsolete命令删除过期备份:
RMAN> delete obsolete;
RMAN retention policy will be applied to the command
RMAN retention policy is set to redundancy 1
using channel ORA_DISK_1
Deleting the following obsolete backups and copies:
Type Key Completion Time Filename/Handle
-------------------- ------ ------------------ --------------------
Backup Set 125 01-NOV-04
Backup Piece 125 01-NOV-04 /data1/oracle/orabak/full_1_541045804
....
Archive Log 2704 17-DEC-04/opt/oracle/oradata/avatar2/archive/1_2716.dbf
Archive Log 2703 17-DEC-04/opt/oracle/oradata/avatar2/archive/1_2715.dbf
Archive
Log 2702 17-DEC-04/opt/oracle/oradata/avatar2/archive/1_2714.dbf
Do you really want to delete the above objects (enter YES or NO)? yes
deleted backup piece
backup piece handle=/data1/oracle/orabak/full_AVATAR2_20041206_173
recid=173 stamp=544156241
.....
deleted archive log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2715.dbf
recid=2703 stamp=545108268
deleted archive log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2714.dbf
recid=2702 stamp=545107659
Deleted 286 objects
RMAN> crosscheck archivelog all;
released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=19 devtype=DISK
specification does not match any archive log in the recovery catalog
-The End-
posted on 2010-04-21 17:36 SIMONE 阅读(1530) 评论(0) 编辑 收藏 所属分类: oracle