4.291 DBA_HIST_BASELINE

DBA_HIST_BASELINE displays information on baselines taken in the system.

For each baseline, this view displays the complete time range and whether the baseline is the default baseline.

Column Datatype NULL Description

DBID

NUMBER

Database ID

BASELINE_ID

NUMBER

Internal ID for the baseline

BASELINE_NAME

VARCHAR2(64)

User-specified name for the baseline

BASELINE_TYPE

VARCHAR2(13)

The baseline type, as follows:

STATIC - baselines that are created manually by the user

MOVING WINDOW - baselines that have dynamic start and end snapshot IDs

GENERATED - baselines that are automatically generated by the system, using a template

START_SNAP_ID

NUMBER

Start snapshot ID for the baseline

START_SNAP_TIME

TIMESTAMP(3)

Time associated with the start snapshot ID

END_SNAP_ID

NUMBER

End snapshot ID for the baseline

END_SNAP_TIME

TIMESTAMP(3)

Time associated with the end snapshot ID

MOVING_WINDOW_SIZE

NUMBER

If BASELINE_TYPE is MOVING WINDOW, this field is the size of the moving window in number of days.

If NULL, then the window size is the value of the AWR retention setting.

CREATION_TIME

DATE

Time the baseline was created

EXPIRATION

NUMBER

How long to keep the baseline, in number of days. A NULL value means that the baseline will be kept forever.

TEMPLATE_NAME

VARCHAR2(64)

Name of the template that created this baseline, if any.

LAST_TIME_COMPUTED

DATE

Last time that statistics were computed on the baseline.

CON_ID

NUMBER

The ID of the container to which the data pertains. 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