SQL> shutdown immediate;
SQL> startup mount;
SQL> alter database flashback off;
SQL> alter database open;
plsql 登录数据库的时候，只有sys用户才能够登录，其他用户登录提示如下信息：
报错信息：archiver error.connect internal only util freed;
以上报错是数据库归档日志满了。。解决方法如图命令。
登录数据库服务器;
方法二：
rman target /
crosscheck archivelog all;
delete noprompt archivelog until time 'sysdate-0.5'; --删除半天前的日志
delete force noprompt archivelog until time 'sysdate-2'; 强制删除
方法三：
参考：http://jingyan.baidu.com/article/e52e3615ade09040c60c5102.html
感谢这位作者。
1、查看归档日志信息
SQL> show parameter log_archive_dest
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest string
log_archive_dest_1 string
log_archive_dest_10 string
log_archive_dest_11 string
log_archive_dest_12 string
log_archive_dest_13 string
log_archive_dest_14 string
log_archive_dest_15 string
log_archive_dest_16 string
log_archive_dest_17 string
log_archive_dest_18 string
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_19 string
log_archive_dest_2 string
log_archive_dest_20 string
log_archive_dest_21 string
log_archive_dest_22 string
log_archive_dest_23 string
log_archive_dest_24 string
log_archive_dest_25 string
log_archive_dest_26 string
log_archive_dest_27 string
log_archive_dest_28 string
NAME TYPE VALUE
------------------------------------ ----------- -----
2、查看归档日志存放目录
SQL> show parameter recover
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest string /u01/oradata/fast_recovery_are
a
db_recovery_file_dest_size big integer 10G
db_unrecoverable_scn_tracking boolean TRUE
recovery_parallelism integer 0
SQL>
3、检查flash recovery area的使用情况
SQL> select * from V$FLASH_RECOVERY_AREA_USAGE;
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE
-------------------- ------------------ -------------------------
NUMBER_OF_FILES
---------------
CONTROL FILE .39 0
1
REDO LOG 0 0
0
ARCHIVED LOG 0 0
0
由于我这里是清理过的，所以是0
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE
-------------------- ------------------ -------------------------
NUMBER_OF_FILES
---------------
BACKUP PIECE 0 0
0
IMAGE COPY 0 0
0
FLASHBACK LOG 0 0
0
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE
-------------------- ------------------ -------------------------
NUMBER_OF_FILES
---------------
FOREIGN ARCHIVED LOG 0 0
0
7 rows selected.
4、进入到归档日志的存放目录，找到所有归档日志文件并删除。
cd /u01/oradata/fast_recovery_are
rm -rf
5、进入RMAN控制台，检查一些无用的archivelog，删除过期的归档日志。
[oracle@fossdb ~]$ rman target /
Recovery Manager: Release 11.2.0.3.0 - Production on Sun Apr 24 11:56:41 2016
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: FOSSDB (DBID=4284647288)
RMAN> crosscheck archivelog all;
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=2046 device type=DISK
validation failed for archived log
RMAN> delete expired archivelog all; 删除所有过期的归档日志
released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=2046 device type=DISK
List of Archived Log Copies for database with db_unique_name FOSSDB
=====================================================================
Key Thrd Seq S Low Time
------- ---- ------- - ---------
17 1 17846 X 22-APR-16
Name: /u01/oradata/fast_recovery_area/FOSSDB/archivelog/2016_04_22/o1_mf_1_17846_ckmn7j3m_.arc
18 1 17847 X 22-APR-16
6、再次检查flash recovery area的使用情况
SQL>select * from V$FLASH_RECOVERY_AREA_USAGE
启动或关闭归档日志：
参考文献：
http://www.eygle.com/archives/2004/10/oracle_howtoeci.html
1.管理员身份连接数据库
2.查看当前归档模式，是归档还是非归档
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 228
Current log sequence 230
3.关闭数据库
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
4.启动数据库到mount状态
SQL> startup mount;
ORACLE instance started.
Total System Global Area 3423965184 bytes
Fixed Size 2180544 bytes
Variable Size 2013268544 bytes
Database Buffers 1392508928 bytes
Redo Buffers 16007168 bytes
Database mounted.
5.启动归档模式
SQL> alter database archivelog;
Database altered.
SQL> archive log list;//查看归档状态
Database log mode Archive Mode
Automatic archival Enabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 228
Next log sequence to archive 230
Current log sequence 230
6.启动数据库
SQL> alter database open;
Database altered.
7.关闭归档模式
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 3423965184 bytes
Fixed Size 2180544 bytes
Variable Size 2013268544 bytes
Database Buffers 1392508928 bytes
Redo Buffers 16007168 bytes
Database mounted.
SQL> alter database noarchivelog;
Database altered.
SQL> archive log list;//查看归档状态
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 228
Current log sequence 230
SQL>