| Oracle® Database Reference 11g Release 1 (11.1) Part Number B28320-01  | 
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DBA_HIST_SYSMETRIC_HISTORY externalizes all available history of the system metric values for the entire set of data kept in the database. This view contains snapshots of V$SYSMETRIC_HISTORY.
| 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 | 
BEGIN_TIME | 
DATE | 
NOT NULL | 
Begin time of the interval | 
END_TIME | 
DATE | 
NOT NULL | 
End time of the interval | 
INTSIZE | 
NUMBER | 
NOT NULL | 
Interval size (in hundredths of a second) | 
GROUP_ID | 
NUMBER | 
NOT NULL | 
Group ID | 
METRIC_ID | 
NUMBER | 
NOT NULL | 
Metric ID | 
METRIC_NAME | 
VARCHAR2(64) | 
NOT NULL | 
Metric name | 
VALUE | 
NUMBER | 
NOT NULL | 
Metric Value | 
METRIC_UNIT | 
VARCHAR2(64) | 
NOT NULL | 
Unit of measurement |