Ogg Capture Client Successfull !free!y Detached From Goldengate Capture ✯

The "detach" message is the final step in a controlled shutdown of this client-server relationship.

To ensure that "detached" always remains a benign message and never a sign of a forced disconnect, follow these best practices:

While the message says successfully , there is a nuance. In rare edge cases, an abnormal termination (e.g., KILL -9 on the extract process, or a database session timeout) will produce this message. However, if the database's LogMining server detects the client is dead and performs a cleanup, it might log a variation. But the standard successfully detached suggests a polite, application-level goodbye.

Look for the status of your Extract group (e.g., RUNNING, STOPPED, or ABENDED). If it shows , there's a real problem.

During maintenance windows, an Extract may be stopped and started to refresh parameters or apply patches. The detachment message confirms the "stop" phase is complete, allowing the environment to prepare for the new instantiation (attachment) of the process. The "detach" message is the final step in

typically appears in the database alert logs or OGG report files when an Integrated Extract process stops

In the clamorous world of database administration, where the roar of transactions never ceases and the pressure for zero downtime is a constant hum, rare is the moment of genuine tranquility. We chase uptime percentages, wrestle with data drift, and monitor replication lag like a heartbeat. Yet, occasionally, the log file offers a message that transcends mere status update. It reads: OGG Capture Client successfully detached from Goldengate capture .

The client detaches, and database logs show ORA-04031: unable to allocate bytes of shared memory ("streams pool",...) .

In the realm of Oracle GoldenGate administration, monitoring the Report file ( ggserr.log ) is a daily routine. Among the myriad of informational messages, one that frequently causes confusion—or is misinterpreted as an error—is: However, if the database's LogMining server detects the

Let's break down the exact log entry.

A "successful detachment" should not be misinterpreted. While the detachment might be successful and clean, the cause behind it could be an error that requires intervention. If you see this message and later find your Extract process in an ABENDED (abnormal end) or STOPPED state, the underlying issue is likely more serious.

In an Oracle database, the GoldenGate capture is handled by a background process (often part of the Streams or LogMiner pool) that reads the online and archived redo logs. The Capture Client (Extract): This is the GoldenGate process ( extract.exe

Integrated Capture relies heavily on the Oracle Shared Pool, specifically the Streams Pool. If the Streams Pool ( STREAMS_POOL_SIZE ) runs out of memory, the database logmining server will crash or force-kill the client connection, leading to an abrupt detachment. 3. Database Instance Failure or Switchover If it shows , there's a real problem

In Integrated Capture mode, the Extract process does not read redo logs directly; instead, it communicates with a logmining server within the Oracle database. This message confirms that the handshake between GoldenGate and the database has ended gracefully.

While the term "detached" may sound like an error, it is often a standard informational message indicating that a controlled stop or restart procedure has been executed correctly.

Check the health of the capture processes from the database perspective:

The message "OGG Capture client successfully detached from GoldenGate capture" functions as the silent handshake of Oracle's Integrated Capture architecture. It is the final, peaceful goodbye between an Extract process and the database mining server when a stop is issued.