Oracle 视图 V$GOLDENGATE_CAPTURE 官方解释，作用，如何使用详细说明

SID

NUMBER

Session identifier of the capture process

SERIAL#

NUMBER

Session serial number of the capture process session

CAPTURE#

NUMBER

Capture process number. A capture process is an Oracle background process prefixed by cp

CAPTURE_NAME

VARCHAR2(128)

Name of the capture process

LOGMINER_ID

NUMBER

Session ID of the Oracle LogMiner session associated with the capture process

STARTUP_TIME

DATE

Time when the capture process was last started

STATE

VARCHAR2(589)

State of the capture process and state of the network. The two states are separated by a semicolon. The possible values are:

• INITIALIZING – Starting up.

• WAITING FOR DICTIONARY REDO – Waiting for redo log files containing the dictionary build related to the first SCN to be added to the capture process session. A capture process cannot begin to scan the redo log files until all of the log files containing the dictionary build have been added.

• DICTIONARY INITIALIZATION – Processing a dictionary build.

• MINING (PROCESSED SCN = scn_value) – Mining a dictionary build at the SCN scn_value.

• LOADING (step X of Y) – Processing information from a dictionary build and currently at step X in a process that involves Y steps, where X and Y are numbers.

• CAPTURING CHANGES – Scanning the redo log for changes that satisfy the capture process rule sets.

• WAITING FOR REDO – Waiting for new redo log files to be added to the capture process session. The capture process has finished processing all of the redo log files added to its session. This state is possible if there is no activity at a source database. For a downstream capture process, this state is possible if the capture process is waiting for new log files to be added to its session.

• EVALUATING RULE – Evaluating a change against a capture process rule set.

• CREATING LCR – Converting a change into an LCR.

• ENQUEUING MESSAGE – Enqueuing an LCR that satisfies the capture process rule sets into the capture process queue.

• PAUSED FOR FLOW CONTROL – Unable to enqueue LCRs either because of low memory or because propagations and outbound servers are consuming messages slower than the capture process is creating them. This state indicates flow control that is used to reduce spilling of captured LCRs when propagation or apply has fallen behind or is unavailable.

• WAITING FOR THE BUFFERED QUEUE TO SHRINK – Waiting for the buffered queue to change to a smaller size. The buffered queue shrinks when there is a memory limitation or when an administrator reduces its size.

• WAITING FOR n SUBSCRIBER(S) INITIALIZING – Waiting for outbound servers that receive LCRs from the capture process to start, where n is the number of apply processes.

• WAITING FOR TRANSACTION – Waiting for LogMiner to provide more transactions.

• WAITING FOR INACTIVE DEQUEUERS – Waiting for the capture process’s queue subscribers to start. The capture process stops enqueuing LCRs if there are no active subscribers to the queue.

• SUSPENDED FOR AUTO SPLIT/MERGE – Waiting for a merge operation to complete.

• SHUTTING DOWN – Stopping.

• ABORTING – Aborting.

TOTAL_PREFILTER_DISCARDED

NUMBER

Total number of prefiltered messages discarded

TOTAL_PREFILTER_KEPT

NUMBER

Total number of prefiltered messages kept

TOTAL_PREFILTER_EVALUATIONS

NUMBER

Total number of prefilter evaluations

TOTAL_MESSAGES_CAPTURED

NUMBER

Total number of redo entries passed by LogMiner to the capture process for detailed rule evaluation since the capture process last started. A capture process converts a redo entry into a message and performs detailed rule evaluation on the message when capture process prefiltering cannot discard the change.

CAPTURE_TIME

DATE

Time when the most recent message was captured

CAPTURE_MESSAGE_NUMBER

NUMBER

Number of the most recently captured message

CAPTURE_MESSAGE_CREATE_TIME

DATE

Creation time of the most recently captured message

TOTAL_MESSAGES_CREATED

NUMBER

Count associated with ELAPSED_LCR_TIME to calculate rate

TOTAL_FULL_EVALUATIONS

NUMBER

Count associated with ELAPSED_RULE_TIME to calculate rate

TOTAL_MESSAGES_ENQUEUED

NUMBER

Total number of messages enqueued since the capture process was last started

ENQUEUE_TIME

DATE

Time when the last message was enqueued

ENQUEUE_MESSAGE_NUMBER

NUMBER

Number of the last enqueued message

ENQUEUE_MESSAGE_CREATE_TIME

DATE

Creation time of the last enqueued message

AVAILABLE_MESSAGE_NUMBER

NUMBER

For local capture, the last redo SCN flushed to the log files. For downstream capture, the last SCN added to LogMiner through the archived redo log files.

AVAILABLE_MESSAGE_CREATE_TIME

DATE

For local capture, the time the SCN was written to the log file. For downstream capture, the time the most recent archived redo log file (containing the most recent SCN) was added to LogMiner.

ELAPSED_CAPTURE_TIME

NUMBER

Elapsed time (in hundredths of a second) scanning for changes in the redo log since the capture process was last started

ELAPSED_RULE_TIME

NUMBER

Elapsed time (in hundredths of a second) evaluating rules since the capture process was last started

ELAPSED_ENQUEUE_TIME

NUMBER

Elapsed time (in hundredths of a second) enqueuing messages since the capture process was last started

ELAPSED_LCR_TIME

NUMBER

Elapsed time (in hundredths of a second) creating LCRs since the capture process was last started

ELAPSED_REDO_WAIT_TIME

NUMBER

Elapsed time (in hundredths of a second) spent by the capture process in the WAITING FOR REDO state

ELAPSED_PAUSE_TIME

NUMBER

Elapsed flow control pause time (in hundredths of a second)

STATE_CHANGED_TIME

DATE

Time at which the state of the capture process changed

SGA_USED

NUMBER

The total amount of shared memory used (in bytes) by the capture process

SGA_ALLOCATED

NUMBER

The total amount of shared memory (in bytes) allocated from the Streams pool for the capture process

BYTES_OF_REDO_MINED

VARCHAR2(64)

The total amount of redo data mined (in bytes) since the capture process last started

SESSION_RESTART_SCN

VARCHAR2(64)

The SCN from which the capture process started mining redo data when it was last started

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

SPID

VARCHAR2(12)

Operating system process identifier of the capture process

EXTRACT_NAME

VARCHAR2(128)

Name of the extract process

SERVER_SID

NUMBER

Session ID of the capture server

SERVER_SERIAL#

NUMBER

Session serial number of the capture server

SERVER_SPID

VARCHAR2(12)

Operating system process identifier of the capture server

TOTAL_MESSAGES_SENT

NUMBER

Total number of LCRs sent by the capture process to the GoldenGate extract process since the last time the extract attached to the capture

SEND_TIME

DATE

Time the last LCR was sent by the capture process to the extract process

LAST_SENT_MESSAGE_NUMBER

NUMBER

Message number of the last LCR sent by the capture process to the extract process

LAST_SENT_MESSAGE_CREATE_TIME

DATE

Creation time at the source database of the last LCR sent by the capture process to the extract process

ELAPSED_SEND_TIME

NUMBER

Time elapsed (in hundredths of a second) sending LCRs to the extract process since the last time the extract process attached to the capture process

BYTES_SENT

NUMBER

Total number of bytes sent by the capture process to the extract process since the last time the extract process attached to the capture process