DBA_HIST_SGA displays historical summary information about the system global area (SGA). This view contains snapshots of V$SGA.
| Column | Datatype | NULL | Description |
|---|---|---|---|
SNAP_ID |
NUMBER |
NOT NULL |
Unique snapshot ID |
DBID |
NUMBER |
NOT NULL |
Database ID for the snapshot |
INSTANCE_NUMBER |
NUMBER |
NOT NULL |
Instance number for the snapshot |
NAME |
VARCHAR2(64) |
NOT NULL |
SGA component group |
VALUE |
NUMBER |
NOT NULL |
Memory size (in bytes) |