V$STREAMS_APPLY_SERVER
displays information about each apply server and its activities. An apply server receives events from the apply coordinator for an apply process. For each event received, an apply server either applies the event or sends the event to the appropriate apply handler.
Column | Datatype | Description |
---|---|---|
SID |
NUMBER |
Session ID of the apply server's session |
SERIAL# |
NUMBER |
Serial number of the apply server's session |
APPLY# |
NUMBER |
Apply process number. An apply process is an Oracle background process, prefixed by ap . |
APPLY_NAME |
VARCHAR2(30) |
Name of the apply process |
SERVER_ID |
NUMBER |
Parallel execution server number of the apply server |
STATE |
VARCHAR2(20) |
State of the apply server:
|
XIDUSN |
NUMBER |
Transaction ID undo segment number of the transaction currently being applied |
XIDSLT |
NUMBER |
Transaction ID slot number of the transaction currently being applied |
XIDSQN |
NUMBER |
Transaction ID sequence number of the transaction currently being applied |
COMMITSCN |
NUMBER |
Commit system change number (SCN) of the transaction currently being applied |
DEP_XIDUSN |
NUMBER |
Transaction ID undo segment number of a transaction on which the transaction being applied by this apply server depends |
DEP_XIDSLT |
NUMBER |
Transaction ID slot number of a transaction on which the transaction being applied by this apply server depends |
DEP_XIDSQN |
NUMBER |
Transaction ID sequence number of a transaction on which the transaction being applied by this apply server depends |
DEP_COMMITSCN |
NUMBER |
Commit system change number (SCN) of the transaction on which this apply server depends |
MESSAGE_SEQUENCE |
NUMBER |
Number of the current message being applied by the apply server. This value is reset to 1 at the beginning of each transaction. |
TOTAL_ASSIGNED |
NUMBER |
Total number of transactions assigned to the apply server since the apply process was last started |
TOTAL_ADMIN |
NUMBER |
Total number of administrative jobs done by the apply server since the apply process was last started. See the STATE information in this view for the types of administrative jobs. |
TOTAL_ROLLBACKS |
NUMBER |
Number of transactions assigned to this server which were rolled back |
TOTAL_MESSAGES_APPLIED |
NUMBER |
Total number of messages applied by this apply server since the apply process was last started |
APPLY_TIME |
DATE |
Time the last message was applied |
APPLIED_MESSAGE_NUMBER |
NUMBER |
Number of the last message applied |
APPLIED_MESSAGE_CREATE_TIME |
DATE |
Creation time at the source database of the last captured message applied. No information about user-enqueued messages is recorded in this column. |
ELAPSED_DEQUEUE_TIME |
NUMBER |
Time elapsed (in hundredths of a second) dequeuing messages since the apply process was last started |
ELAPSED_APPLY_TIME |
NUMBER |
Time elapsed (in hundredths of a second) applying messages since the apply process was last started |
Note:
TheELAPSED_DEQUEUE_TIME
and ELAPSED_APPLY_TIME
columns are only populated if the TIMED_STATISTICS
initialization parameter is set to true
, or if the STATISTICS_LEVEL
initialization parameter is set to TYPICAL
or ALL
.