Oracle知识:ORA-16014错误和flash空间满
SQLgt; alter database open;alter database open*第 1 行出现错误:ORA-16014: 日志 2 的序列号 27 未归档, 没有可用的目的地OR
ORA-16014错误和flash空间满
昨天创建一个表 create table user as select name from t_userinfo
t_userinfo 这个表很大. 过了一段时间一直在读写硬盘.持续了有3个小时.
PL/SQL DEVELOPER 也无法中断.
通过查v$sqlarea 的sql_fulltext 找到了 sql_Id=gutz8yut71m22
然后在v$session找到了 session_id=646 serial#=57
然后alter system kill session '646,57' 无法删除.
查v$session_wait 的event 发现是log siwtch
shutdown immediate 也无法关闭.只好在windows下关闭了Oracle服务.
再次启动时候,很怕数据库做回滚操作,因为我已经把归档日志删除了1.1G,也害怕无法恢复.
1.问题以及解决过程
SQL> select status from v$instance;
STATUS
------------
MOUNTED
SQL> alter database open;
alter database open
*
第 1 行出现错误:
ORA-16014: 日志 2 的序列号 27 未归档, 没有可用的目的地
ORA-00312: 联机日志 2 线程 1:
'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\REDO02.LOG'
SQL> show parameter db_recovery_file
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest string D:\oracle\product\10.2.0/flash
_recovery_area
db_recovery_file_dest_size big integer 2G
SQL> alter system archive log current;
alter system archive log current
*
第 1 行出现错误:
ORA-01109: 数据库未打开
SQL> alter system switch logfile;
alter system switch logfile
*
第 1 行出现错误:
ORA-01109: 数据库未打开
SQL> show parameter db_recovery
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest string C:\oracle\product\10.2.0/flash
_recovery_area
db_recovery_file_dest_size big integer 2G
SQL> alter system set db_recovery_file_dest_size=3G scope=both;
系统已更改。
SQL> alter database open;
数据库已更改。
(1).检查flash recovery area的使用情况:
SQL> select * from v$flash_recovery_area_usage;
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
------------ ------------------ ------------------------- ---------------
CONTROLFILE 0 0 0
ONLINELOG 0 0 0
ARCHIVELOG 7.23 0 48
BACKUPPIECE 0 0 0
IMAGECOPY 0 0 0
FLASHBACKLOG 0 0 0
已选择6行。
SQL>
(2).计算flash recovery area已经占用的空间:
SQL> select sum(percent_space_used)*3/100 from v$flash_recovery_area_usage;
SUM(PERCENT_SPACE_USED)*3/100
-----------------------------
2.1369
也可以用下面的语句检查
SELECT substr(name, 1, 30) name, space_limit AS quota,space_used AS used,space_reclaimable
AS reclaimable, number_of_files AS files
FROM v$recovery_file_dest ;
create table as 语句产生了很多归档导致 online redo log无法归档,在这里,我们通过设置
db_recovery_file_dest_size参数,增大了flash recovery area来解决这个问题。
(3).也可以通过删除flash recovery area中不必要的备份来释放flash recovery area空间来解决这个问
题:
c:\RMAN
rman> connect target sys/pwd@test
(1). delete obsolete;
(2). crosscheck backupset; delete expired backupset;
(3). crosscheck archivelog all; delete expired archivelog all;
Oracle指出,我们可以通过执行以下命令:
RMAN> backup recovery area;
将闪回区的内容备份到第三方介质,,也同样可以解决这个问题。
是以为记。

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