However, in Oracle 10.1 and higher this wait time is now broken out into the "read by other session" wait event. Oracle I/O latency monitoring. Instance Tuning - download.oracle.com SQL Performance issues basic Troubleshooting Stpes - Blogger Janis recommends a 5-step methodology for Oracle performance tuning - and these steps build upon one another, so it's important to start at the beginning. . 5 Oracle Performance Tuning Tips for Optimized Performance - Database ... If two sessions try to insert the same key value the second session has to wait to see if an ORA-0001 should be raised or not. Operating System tools show very high utilization or saturation of disks used for storage of database files. SQL Top wait col c1 heading 'Average Waits for|Full scan Read I/O' format 9999.99 . August 29, 2013 Kyle Hailey I/O, oracle, Performance. See the sample AWR report (fig-1) showing "cache buffer chain" wait event as top event. Cyrille, I am trying to pull all sql_fulltext during a time frame, Will this query helps me to get the info I am looking for or there is a better way? Descriptions of Wait Events Information about wait events is displayed in three dynamic performance views: V$SESSION_WAIT displays the events for which sessions have just completed waiting or are currently waiting. SQL Server Wait Events: Taking the Guesswork out of ... - Simple Talk Foreground Wait Class. I am hoping someone can help me with an elusive wait event called 'PX Deq: Execution Msg'. - Use below query to check all the concurrent request running which may refer given package. High "gc cr grant 2-way" / "gc current block 2-way" Wait due ... - Oracle Oracle Real Application Clusters (Oracle RAC) is a clustered version of Oracle Database based on a comprehensive high-availability stack that can be used as the foundation of a database cloud system as well as a shared infrastructure, ensuring high availability, scalability, and agility for any application. For the previous example, the appropriate data to check would be latch-related.
