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  • Oracle RDBMS 12c Features

    November 4, 2013 from 9am to 5pm – Online One day session about the 12c database with a deep dive on the Upgrade Features, RDBMS Features, RMAN Features, Performance Features, Multitentant Feature, Overview of Cluster, ASM and Data Guard. Th Organized by Expertezed | Type: online, session

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Database hang and Row Cache Lock concurrency troubleshooting

This post will help to analyze Oracle database instance slowdown that can happen due to considerable row cache lock (enqueue) wait events. It’s is based on a real case of a database hang that I worked on recently. I must admit this type of situation does not appear often but it’s very dangerous since it can considerably slow down a database instance or even freeze it for a short period of time. In most cases SQL against ASH view and Systemstate dumps can help to nail down the problem unless…

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Posted by Kirill Loifman on April 15, 2014 at 12:53am

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