探索oracle redolog内部结构
编辑手记:使用过Data Guard的人应该对于Standby Redo Logs都不陌生,在配置了 Standby Redo Logs的standby中,能够进行日志的实时应用,同时Standby Redo Logs能够给主库传输过来的日志增加一层安全保护。...
Online Redo Logs, Archived Redo Logs, and Standby Redo Logs the most crucial structures for Data Guard recovery operations are online redo logs, archived redo logs, and standby redo logs. Redo data
oracle 12c ocp考试科目062,内有362道题,部分有说明文字。
APPLIES TO: Oracle Database - Enterprise Edition - Version 9.2.0.1 and later Oracle Database Cloud Schema Service - Version N/A and later Oracle Database Exadata Cloud Machine - Version N/A and la...
Debezium报错处理系列之第100篇:Redo logs may be sized too small using the default mining strategy, consider increasing redo log sizes to a minimum of 500MB.
add Redo logs/dorp redo logs in Physical ...1. Add Redologs on Standby 2. Drop Redologs on Standby Add Redo Logs on Standby 1. Stop Redo apply: SQL> ALTER DATABASE RECOVER MANAGED STANDB
Choosing a good InnoDB log file size is key to InnoDB write ... This can be done by measuring the amount of writes in the redo logs. You can find a detailed explanation in this post.选择合适的INNO...
Thearchived redo log failoverfeature enables RMAN to complete a backup even when some archiving destinations are missing logs or contain logs with corrupt blocks. If at least on...
MySQL
In this Document Goal Solution References Applies to: Oracle Server - Enterprise Edition - Versio...
Standby Redo Logs (SRL)的用途,益处与限制 来源于: Usage, Benefits and Limitations of Standby Redo Logs (SRL) (文档 ID 219344.1) 目的: 本文显示了Standby Redo Logs (SRL)的用途,益处与限制,适用于 ...
Choosing a good InnoDB log file size is key to InnoDB write ... This can be done by measuring the amount of writes in the redo logs. You can find a detailed explanation inthis post. To sum ...
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Actually, the definition of sys variable innodb_log_buffer_size was confusing me very much.What actually this buffer is meant for?Is it a part of Innodb buffer pool?And after extensive googling(!...
Redo Log File Use in ARCHIVELOG Mode 什么是Archived Redo Logs? Oracle Databas...
显示了:ORA-16789: standby redo logs not configured 错误 上网查了一下,才知道是没有建立备用logfile。 primary database : sql>alter database add standby logfile group 4 '路径...' ...
ORA-19528: redo logs being cleared may need acce 1) shutdown the database cleanly 2) startup mount and backup control file to trace. 3) edit the control file to remove the problematic file. ...
Using 4k Redo Logs on Flash, 4k-Disk and SSD-based Storage (Doc ID 1681266.1) Many modern storage systems, especially those based on flash memory or SSDs, conform to an industry standard known as Adv...
Oracle 调整Online Redo Logs大小 1. 1.查询当前的日志设置情况 sys@ora10g> select * From v$logfile; ...
环境描述 Oracle 12.1.0.2 + active Dataguard + DG Broker 主库:orcl 备库 orcls 问题描述 查看Dg broker 状态时,发现备库错误 DGMGRL> show configuration;... Warning: ORA-16809: multiple warnings ...
转自:http://space.itpub.net/519536/viewspace-557736-- 2009-2-10 17:14-- 调整Online Redo Logs大小(Resizing Oracle Online ...
使用DICT_FROM_REDO_LOGS方式,进程会将数据库的数据字典信息抽取到online redo log里去,如果数据库的数据字典较大,或者redo log太小,或者DML操作较频繁,就有可能在抽取数据字典信息时发生日志切换操作。...
1.查询当前的日志设置情况sys@ora10g> col MEMBER for a40sys@ora10g> select * From v$logfile; GROUP# STATUS TYPE MEMBER IS_---------- ------- ------------------
Usage, Benefits and Limitations of Standby Redo Logs (SRL) [ID 219344.1]PURPOSE ------- This docu...
Although it may seem that you should back up online redo logs along with the datafiles and control file, this technique is dangerous. You should not back up online redo logs for the following reasons:...
原文链接:http://www.mysqlperformanceblog.com/2012/10/08/measuring-the-amount-of-writes-in-innodb-redo-logs/ Choosing a good InnoDB log file size is key to InnoDB write performance. This can be done ...
1.查询当前的日志设置情况sys@ora10g> col MEMBER for a40sys@ora10g> select * From v$logfile; GROUP# STATUS TYPE MEMBER IS_---------- ------- ------------------