Oracle Database BUFFER CACHE is one of the core important architectural memory component which holds the copies of data blocks read from datafiles. In my journey of Oracle DBA this memory component played major role in handling Performance Tuning issues. In this Blog, I will demonstrate a case study and analyze the behavior of BUFFER […]
One of the major player in the SGA is SHARED_POOL, without which we can say that there are no query executions. During some performance tuning trials, you would have used ALTER SYSTEM command to flush out the contents in SHARED_POOL. Do you really know what exactly this command cleans out? As we know that internally […]
Every user session on Oracle database will be able to access default table PLAN_TABLE to collect execution plan of a query from EXPLAIN PLAN command. But, how is this table available to all the users in the database and gets empty once you disconnect? Is this table available and created for every user logging into […]
Choosing the best suitable storage disk for your Oracle database is very important when you architect the environment for better performance. Not just considering database files (Data files, Control files, Redo logs, Archive logs etc…) it is also vital to look at the type of application and the data flow in and out of the […]
