First page Back Continue Last page Graphics
...PGA and UGA
User Global Area – UGA
- Private memory for session state
- UGA within PGA in Dedicated Server mode
- UGA within SGA in Shared Server Mode
- SGA typically larger in Shared Server environments
Notes:
The UGA, or "User Global Area" is another private memory structure used by a server process to maintain its state. A notable point about the UGA is that the UGA will be found within the PGA in dedicated server mode, but is moved to the SGA in shared server mode, causing the size of the SGA to grow when running in shared server mode.
See the Metalink web site (http://metalink.oracle.com) and the Oracle9i Concepts Guide for more information on this memory structure.