DBA_HIST_SGA_TARGET_ADVICE

DBA_HIST_SGA_TARGET_ADVICE provides historical information about the SGA_TARGET initialization parameter.

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
SGA_SIZE	NUMBER	NOT NULL	Size of the SGA
SGA_SIZE_FACTOR	NUMBER	NOT NULL	Ratio between the SGA_SIZE and the current size of the SGA
ESTD_DB_TIME	NUMBER	NOT NULL	Estimated DB_TIME for this SGA_SIZE
ESTD_PHYSICAL_READS	NUMBER		Estimated number of physical reads
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

See Also: “SGA_TARGET”