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Discussions about Oracle performance tuning, RAC, Oracle internal & E-business suite. In this blog entry, we will discuss strategies and techniques to resolve ‘log file sync’ waits. This entry is intended to show an approach based upon scientific principes, not necessarily a step by step guide. Let’s understand how LGWR is inherent in implementing commit mechanism first. Commit mechanism and LGWR
Discussions about Oracle performance tuning, RAC, Oracle internal & E-business suite. I encountered few customer issues centered around library cache lock and library cache pin waits. Library cache lock and pin waits can hang instance, and in few cases, whole clusters of RAC instances can be hung due to library cache lock and pin waits. Why Library cache locks are needed? Library cache locks aka p
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