Oracle v$sga views

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The following Oracle Database views provide information about the SGA components and their dynamic resizing:

v$sga - Displays summary information about the system global area (SGA).

v$sgainfo - Displays size information about the SGA, including the sizes of different SGA components, the granule size, and free memory.

v$sgastat - Displays detailed information about the SGA.

v$sga_dynamic_components - Displays information about the dynamic SGA components. This view summarizes information based on all completed SGA resize operations since instance startup.

v$sga_dynamic_free_memory - Displays information about the amount of SGA memory available for future dynamic SGA resize operations.

v$sga_resize_ops - Displays information about the last 100 completed SGA resize operations.

v$sga_current_resize_ops - Displays information about SGA resize operations which are currently in progress. An operation can be a grow or a shrink of a dynamic SGA component.

There are simple v$sga scripts to display SGA information:

SQL> select * from v$sga;

NAME                   VALUE
-------------------- ----------
Fixed Size              456424
Variable Size        503316480
Database Buffers     134217728
Redo Buffers            679936

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