Comments on: Tuning ‘log file sync’ Event Waits http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/ News and views from Pythian DBAs Fri, 10 Feb 2012 13:01:25 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: Priya http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-508271 Priya Sat, 12 Feb 2011 21:11:08 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-508271 Nice explanation. Thanks. I have one question i have a Top 5 wait stats where in it says log file sync total waits 101k and wait event being commit. Does that mean that 101k log file sync event waits are caused by one and only commits. On the contrary AWR also says 42 commits per minute. You have queried differently to get user commits. How can i get the user calls, user commits exactly. Nice explanation. Thanks.
I have one question i have a Top 5 wait stats where in it says log file sync total waits 101k and wait event being commit. Does that mean that 101k log file sync event waits are caused by one and only commits.
On the contrary AWR also says 42 commits per minute.
You have queried differently to get user commits. How can i get the user calls, user commits exactly.

]]> By: Redo Log Analysis: 2. A “log file sync” case « DBACOMP SOLUTIONS – Excelência em Banco de Dados http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-491637 Redo Log Analysis: 2. A “log file sync” case « DBACOMP SOLUTIONS – Excelência em Banco de Dados Mon, 03 Jan 2011 01:52:47 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-491637 [...] Tuning ‘log file sync’ Event Waits – por Riyaj Shamsudeen [...] [...] Tuning ‘log file sync’ Event Waits – por Riyaj Shamsudeen [...]

]]> By: Redo Log Analysis: 1. O guia completo « DBACOMP SOLUTIONS – Excelência em Banco de Dados http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-491635 Redo Log Analysis: 1. O guia completo « DBACOMP SOLUTIONS – Excelência em Banco de Dados Mon, 03 Jan 2011 01:50:13 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-491635 [...] Tuning ‘log file sync’ Event Waits – por Riyaj Shamsudeen [...] [...] Tuning ‘log file sync’ Event Waits – por Riyaj Shamsudeen [...]

]]> By: Claudio Pereira http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-468359 Claudio Pereira Sun, 24 Oct 2010 05:11:01 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-468359 Clear and concise explanation with many tools to find the probably root cause. Thank you. Clear and concise explanation with many tools to find the probably root cause. Thank you.

]]> By: Other DBA Related « Center Point for Oracle DBA & Kuwait Info http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-462905 Other DBA Related « Center Point for Oracle DBA & Kuwait Info Sat, 02 Oct 2010 09:31:29 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-462905 [...] Tuning ‘logfine sync’ Event waits Possibly related posts: (automatically generated)Oracle RAC DBAOracle Recovery Manager satisfies the most pressing demands of performance,…Oracle Recovery Manager Design Best Practices with DataDomainRMAN Data Recovery Advisor in Oracle 11g – scenario based explanation [...] [...] Tuning ‘logfine sync’ Event waits Possibly related posts: (automatically generated)Oracle RAC DBAOracle Recovery Manager satisfies the most pressing demands of performance,…Oracle Recovery Manager Design Best Practices with DataDomainRMAN Data Recovery Advisor in Oracle 11g – scenario based explanation [...]

]]> By: Rajeshkumar Chandrasekar http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-456415 Rajeshkumar Chandrasekar Tue, 31 Aug 2010 14:02:46 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-456415 This is an Excellent post with all required information in a single page. Very very informative. I appreciate this usefull post. This is an Excellent post with all required information in a single page. Very very informative. I appreciate this usefull post.

]]> By: Geoffrey Musafu http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-447799 Geoffrey Musafu Thu, 29 Jul 2010 12:39:44 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-447799 I love the LGWR and semaphores overview. Nice post I love the LGWR and semaphores overview.

Nice post

]]> By: akas http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-409225 akas Wed, 24 Feb 2010 11:19:45 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-409225 3600 seconds is one hour. Hope you get it now. 3600 seconds is one hour. Hope you get it now.

]]> By: bipin http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-405285 bipin Fri, 12 Feb 2010 16:20:04 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-405285 Hi, I didnot get this. On average, 27021/3600 = 7.5 processes from where we are getting the value of 3600 ? my awr snapshot time is for 1800seconds. can u please let me know why we divided the value with 3600 thanks. bipsy Hi,
I didnot get this.
On average, 27021/3600 = 7.5 processes

from where we are getting the value of 3600 ?
my awr snapshot time is for 1800seconds.
can u please let me know why we divided the value with 3600

thanks.
bipsy

]]> By: oracle dba http://www.pythian.com/news/1098/tuning-log-file-sync-event-waits/#comment-405269 oracle dba Fri, 12 Feb 2010 15:00:11 +0000 http://www.pythian.com/blogs/1098/tuning-log-file-sync-event-waits#comment-405269 Your blog help me a lot - Thanks Your blog help me a lot – Thanks

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