oracle11.2.0.4.0 配置dg(lgwr+async)笔记

最新推荐文章于 2021-04-12 11:27:33 发布

返璞归真素闲人

最新推荐文章于 2021-04-12 11:27:33 发布

阅读量2.1k

点赞数

CC 4.0 BY-SA版权

分类专栏：笔记

本文链接：https://blog.youkuaiyun.com/a743044559/article/details/78082432

在Oracle 11g R2环境中，配置RAC+DG时，将主库Redo Log传输模式从ARCN改为LGWR以实现更快的数据同步。然而，在启用实时应用备库时，发现主库的归档过程出现停滞。通过检查发现，日志传输中存在LNS进程而非预期的LGWR进程。调整备库设置以启动实时应用后，发现standby_log文件未分配。问题分析及解决方案见原文链接。

oracle 11g r2(11.2.0.4.0 )，配置rac+dg，备库启用实时应用遇到的一些问题：
主库参数：

*.log_archive_dest_2='location=+arch/jhdb/archivelog valid_for=(all_logfiles,all_roles) db_unique_name=jhdb'

*.log_archive_dest_3='service=jhdg lgwr async valid_for=(online_logfiles,primary_role) db_unique_name=jhdg'

修改主库传输redolog模式，由arcn传输改成lgwr。
主库日志：

Archived Log entry 23982 added for thread 1 sequence 11108 ID 0x41cdfd03 dest 2:
******************************************************************
LGWR: Setting 'active' archival for destination LOG_ARCHIVE_DEST_3
******************************************************************
Mon Sep 25 10:24:02 2017
WARN: ARC1: Terminating pid 3986 hung on an I/O operation
WARN: ARC1: Terminating pid 35951 hung on an I/O operation
WARN: ARC1: Terminating pid 3362 hung on an I/O operation
Killing 1 processes with pids 3986 (Process by index) in order to remove hung processes. Requested by OS process 35949 on instance 1
Killing 1 processes with pids 35951 (Process by index) in order to remove hung processes. Requested by OS process 35949 on instance 1
Killing 1 processes with pids 3362 (Process by index) in order to remove hung processes. Requested by OS process 35949 on instance 1
ARC1: Error 16198 due to hung I/O operation to LOG_ARCHIVE_DEST_3
ARC1: Detected ARCH process failure
ARC1: Detected ARCH process failure
ARC1: Detected ARCH process failure
ARC1: STARTING ARCH PROCESSES
Mon Sep 25 10:24:09 2017
ARC0 started with pid=44, OS i