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最近发表
- Oracle 19c/21c最新patch信息-202404
- PostgreSQL恢复系列:pg_filedump批量处理
- PostgreSQL部分主要字典信息
- PostgreSQL恢复系列:pg_filedump恢复字典构造
- PostgreSQL 16 源码安装
- ORA-00742 ORA-00312 恢复
- 数据库open成功后报ORA-00353 ORA-00354错误引起的一系列问题(本质ntfs文件系统异常)
- ORA-600 ktsiseginfo1故障
- ORA-00600: internal error code, arguments: [16703], [1403], [4] 原因
- 最近遇到几起ORA-600 16703故障(tab$被清空),请引起重视
- ORA-600 2662快速恢复之Patch scn工具
- TNS-12518: TNS:listener could not hand off client connection
- ora.storage无法启动报ORA-12514故障处理
- 断电引起文件scn异常数据库恢复
- ORA-16188: LOG_ARCHIVE_CONFIG settings inconsistent with previously started instance
- .[hudsonL@cock.li].mkp勒索加密数据库完美恢复
- 模拟带库实现rman远程备份
- 又一例:ORA-600 kclchkblk_4和2662故障
- Oracle误删除数据文件恢复
- Oracle 19C 备库DML重定向—DML Redirection
月归档:七月 2016
mount数据库也可能有LOCAL=NO的进程
在一次无意中发现mount状态的数据库也有LOCAL=NO的进程,经过分析确定是由于主库连接到备库的nls或者arch进程连接到备库引起的
发现mount库中有LOCAL=NO的进程
[oracle@localhost ~]$ sqlplus / as sysdba SQL*Plus: Release 10.2.0.5.0 - Production on Fri Jul 29 11:59:57 2016 Copyright (c) 1982, 2010, Oracle. All Rights Reserved. Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> select database_role ,open_mode from v$database; DATABASE_ROLE OPEN_MODE ---------------- ---------- PHYSICAL STANDBY MOUNTED SQL> exit Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options [oracle@localhost ~]$ ps -ef|grep LOCAL oracle 11394 1 0 Apr27 ? 08:08:41 oracleorcl (LOCAL=NO) oracle 11398 1 0 Apr27 ? 15:36:29 oracleorcl (LOCAL=NO) oracle 18854 18752 0 12:00 pts/2 00:00:00 grep LOCAL [oracle@localhost ~]$ ps -ef|grep pmon oracle 14374 1 0 2015 ? 00:10:54 ora_pmon_orcl oracle 18893 18752 0 12:01 pts/2 00:00:00 grep pmon SQL> select sid,status,username from v$session where paddr in 2 (select addr from v$process where spid in(11394,11398)); SID STATUS USERNAME ---------- -------- ------------------------------ 510 INACTIVE PUBLIC 507 INACTIVE PUBLIC
查看备库进程连接
[oracle@localhost ~]$ netstat -natp|grep -E '11394|11398' (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) tcp 0 0 192.168.160.22:1521 192.168.160.23:42783 ESTABLISHED 11394/oracleorcl tcp 0 0 192.168.160.22:1521 192.168.160.23:42785 ESTABLISHED 11398/oracleorcl
主库上查看,确定192.168.160.22是备库
SQL> show parameter log_archive_dest_2; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ log_archive_dest_2 string service=orcl lgwr async valid_ for=(online_logfiles,primary_r ole) db_unique_name=orcl SQL> !tnsping orcl TNS Ping Utility for Linux: Version 10.2.0.5.0 - Production on 29-JUL-2016 12:20:01 Copyright (c) 1997, 2010, Oracle. All rights reserved. Used parameter files: Used TNSNAMES adapter to resolve the alias Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST =192.168.160.22)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl))) OK (0 msec)
查看主库连接
[oracle@localhost ~]$ netstat -natp|grep "192.168.160.22" (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) tcp 0 0 192.168.160.23:42785 192.168.160.22:1521 ESTABLISHED 12394/ora_arc1_orcl tcp 0 0 192.168.160.23:42783 192.168.160.22:1521 ESTABLISHED 12400/ora_lns1_orcl
通过分析确定在mount情况的备库中,会有LOCAL=NO的进程,他们是主库arch和lns进程对应的服务进程
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_OFFLINE_ROLLBACK_SEGMENTS/_CORRUPTED_ROLLBACK_SEGMENTS
对于oracle undo异常的时候恢复中,经常需要使用的_OFFLINE_ROLLBACK_SEGMENTS和_CORRUPTED_ROLLBACK_SEGMENTS参数,关于这两个参数的区别进行说明
_OFFLINE_ROLLBACK_SEGMENTS 参数说明
_CORRUPTED_ROLLBACK_SEGMENTS 参数说明
_OFFLINE_ROLLBACK_SEGMENTS 和 _CORRUPTED_ROLLBACK_SEGMENTS 区别
这两个参数属于oracle隐含参数,在没有oracle support的情况下,请慎用.该相关参数可能导致数据库逻辑不一致风险,如果使用了,建议逻辑方式导出导入库
oracle asm系列文章汇总
为了方便大家更容易的查看相关asm内容,今天(2016年7月28日)对asm的相关文章进行了汇总整理.如果有asm相关的其他问题,可以通过手机(17813235971)或者QQ(107644445)交流
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