Note_Tech

All technological notes.

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DBA - SGA: Java Pool

Java pool
- an area of memory that stores all session-specific Java code and data within the Java Virtual Machine (JVM).
- includes Java objects that are migrated to the Java session space at end-of-call.
For dedicated server connections,
- the Java pool includes the shared part of each Java class, including methods and read-only memory such as code vectors, but not the per-session Java state of each session.
For shared server,
- the pool includes the shared part of each class and some UGA used for the state of each session. Each UGA grows and shrinks as necessary, but the total UGA size must fit in the Java pool space.