DBA_HIST_SGASTAT

DBA_HIST_SGASTAT displays detailed historical information on the system global area (SGA). This view contains snapshots of V$SGASTAT.

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)`		SGA component group
`POOL`	`VARCHAR2(12)`		Designates the pool in which the memory in `NAME` resides: `shared pool` - Memory is allocated from the shared pool `large pool` - Memory is allocated from the large pool `java pool` - Memory is allocated from the Java pool `streams pool` - Memory is allocated from the Streams pool
`BYTES`	`NUMBER`		Memory size (in bytes)
`CON_DBID`	`NUMBER`		The database ID of the PDB for the sampled session
`CON_ID`	`NUMBER`		The ID of the container that `CON_DBID` identifies. Possible values include: `0`: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs. `1`: This value is used for rows containing data that pertain to only the root n: Where n is the applicable container ID for the rows containing data