数据库报错：archive log 日志已满，数据库不能连接ORA-00257: archiver error. Connect internal only, until freed 错误的处理方法

$ sqlplus /nolog

SQL*Plus: Release 11.2.0.1.0 Production on Wed Feb 24 08:11:21 2010

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

SQL> conn /as sysdba

Connected.

查看flash recovery area已经占用的空间SQL> select sum(percent_space_used)*3/100 from v$flash_recovery_area_usage;

SQL> select * from V$FLASH_RECOVERY_AREA_USAGE;

FILE_TYPE            PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE

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

NUMBER_OF_FILES

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

CONTROL FILE                          0                         0

0

REDO LOG                              0                         0

0

ARCHIVED LOG                     96.15                         0

50

FILE_TYPE            PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE

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

NUMBER_OF_FILES

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

BACKUP PIECE                          0                         0

0

IMAGE COPY                            0                         0

0

FLASHBACK LOG                         0                         0

0

FILE_TYPE            PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE

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

NUMBER_OF_FILES

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

FOREIGN ARCHIVED LOG                  0                         0

0

7 rows selected.

查看归档日志所在位置

SQL> show parameter recover;

NAME                                 TYPE        VALUE

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

db_recovery_file_dest                string      /oracle/flash_recovery_area

db_recovery_file_dest_size           big integer 10G

recovery_parallelism                 integer     0

转移或清除对应的归档日志, 删除一些不用的日期目录的文件，注意保留最后几个文件注意: 在删除归档日志后必须用RMAN维护控制文件，否则空间显示仍然不释放。

在rman里删除过期日志

$ rman target sys/口令

Recovery Manager: Release 11.2.0.1.0 - Production on Wed Feb 24 08:13:00 2010

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

connected to target database: ****

RMAN> crosscheck archivelog all;                      检查一些无用的archivelog

RMAN> delete expired archivelog all;                删除过期archivelog

增大闪回区大小

SQL> alter system set db_recovery_file_dest_size=20G scope=both;

SQL> select * from V$FLASH_RECOVERY_AREA_USAGE;

FILE_TYPE            PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE

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

NUMBER_OF_FILES

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

CONTROL FILE                          0                         0

0

REDO LOG                              0                         0

0

ARCHIVED LOG                      38.52                         0

17

FILE_TYPE            PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE

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

NUMBER_OF_FILES

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

BACKUP PIECE                          0                         0

0

IMAGE COPY                            0                         0

0

FLASHBACK LOG                         0                         0

0

FILE_TYPE            PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE

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

NUMBER_OF_FILES

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

FOREIGN ARCHIVED LOG