Oracle11g intelligent self-management Oracle 11g Tips by Burleson Consulting

2007 PGA Update:  Oracle technology is constantly changing, so don't miss my new notes on updates to Oracle PGA behavior.   Also see these important notes on over-riding the Oracle PGA defaults.

As of 2007, the commercial database market is very mature and expectations are high.  All of the leading databases do a good job in storing and retrieving data, and customers are now demanding self-tuning databases, intelligent database that automatically detect and correct sub-optimal conditions.

Oracle 11g is the clear leader in this area.  Oracle has invested heavily into self-tuning capabilities including automated storage and memory management and intelligent tuning advisors.  Now in 11g, Oracle closes the loop and offers intelligent automation tools to create a self-healing database.  The most important 11g new automation features include fully-automated memory tuning and fully-automated SQL tuning, a major advance in database technology.

• Automatic Memory Tuning - Automatic PGA tuning was introduced in Oracle 9i. Automatic SGA tuning was introduced in Oracle 10g. In 11g, all memory can be tuned automatically by setting one parameter.
   

• Fully Automatic SQL Tuning - The 10g automatic tuning advisor makes tuning suggestions in the form of SQL profiles that will improve performance. You can tell 11g to automatically apply SQL profiles for statements where the suggested profile give 3-times better performance that the existing statement. The performance comparisons are done by a new administrative task during a user-specified maintenance window.
   

• Automated Storage Load balancing - Oracle’s Automatic Storage Management (ASM) now enables a single storage pool to be shared by multiple databases for optimal load balancing. Shared disk storage resources can alternatively be assigned to individual databases and easily moved from one database to another as processing requirements change.
   

• Automatic Diagnostic Repository - When critical errors are detected, Oracle automatically creates an “incident” ticket, notifying the DBA instantly.
   

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