ORA00257错误的解决办法

方法一：增大闪回恢复区

SQL> show parameter db_recovery_file_dest_size

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest_size           big integer 2G

SQL> alter SYSTEM SET db_recovery_file_dest_size=5g；

System altered.

方法二：删除闪回恢复区里的归档日志

SQL> show parameter db_recovery_file_dest_size;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest_size           big integer 10G
SQL> select * from v$flash_recovery_area_usage;

FILE_TYPE    PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
------------ ------------------ ------------------------- ---------------
CONTROLFILE                 .07                         0               1
ONLINELOG                  1.46                         0               3
ARCHIVELOG                49.68                         0             126
BACKUPPIECE                   0                         0               0
IMAGECOPY                     0                         0               0
FLASHBACKLOG                  0                         0               0

6 rows selected.

登陆rman:
[oracle@localhost LMAIL]$ rman target / nocatalog
RMAN>list archivelog all;
RMAN>crosscheck archivelog all;
RMAN>change archivelog until logseq=130 delete;

SQL> select * from v$flash_recovery_area_usage;

FILE_TYPE    PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
------------ ------------------ ------------------------- ---------------
CONTROLFILE                 .07                         0               1
ONLINELOG                  1.46                         0               3
ARCHIVELOG                 1.26                         0               5
BACKUPPIECE                   0                         0               0
IMAGECOPY                     0                         0               0
FLASHBACKLOG                  0                         0               0

6 rows selected.

其实解决方法有3种：
1.将归档设置到其他目录，修改alter system set log_archive_dest = 其他路径
2.转移或者删除闪回恢复区里的归档日志。
3.增大闪回恢复区。ALTER SYSTEM SET db_recovery_file_dest_size=3g

前面的方法只是其中的一半，第一种和第二种方法中的转移归档日志还没有做过！