Check network stability between the GoldenGate deployment and the database. Check if the Oracle Streams Pool size is undersized, causing the database to kill the logmining session. 5. Best Practices for Managing GoldenGate Captures
When the Extract process stops, restarts, or loses its connection to the database instance, the database background processes must clean up. The message "OGG capture client successfully detached from GoldenGate capture" is logged by the Oracle Database to confirm that the database-level mining infrastructure has cleanly disconnected from the OGG Extract process. Root Causes of the Detachment
Once I have those details, I can provide a more targeted fix for your environment. Share public link
Similarly, if the network between the OGG server and the database host drops, the client may interpret the broken pipe as a clean detach.
Look for entries around the same timestamp as the detach message. Search for ERROR or WARNING . Best Practices for Managing GoldenGate Captures When the
server, which mines redo logs for the Extract, has successfully closed its session with the OGG client. Oracle Forums Integrated Architecture
This client-server relationship is key. The ogg capture client successfully detached message logs the moment the GoldenGate gracefully disconnects from the database’s capture process .
When the Extract process stops, restarts, or loses its connection to the database instance, the database registers that the external client has severed its link. It then writes the "successfully detached" message to the database alert log or the GoldenGate error log to confirm a clean teardown of that specific session. 2. Common Scenarios That Trigger This Log Entry
This is common in:
The "OGG capture client successfully detached from GoldenGate capture" message indicates a clean, planned disconnection between the Oracle GoldenGate Extract process and the source database. It is a standard status notification typically caused by a manual stop command or a routine configuration change [1].
Scenario 3: The Extract is running, but this message randomly appears in the database alert log.
SELECT capture_name, state, status FROM v$goldengate_capture; Use code with caution.
Database server resources (memory/CPU) are exhausted, a bug in Oracle, or improper shutdown of the database. 2. LogMiner Hung or Locked Share public link Similarly, if the network between
Oracle GoldenGate (OGG) is a popular data replication and integration tool used by organizations to ensure data consistency and availability across multiple systems. One of the critical components of OGG is the Capture process, which captures changes made to the source database and sends them to the target system for replication. However, sometimes the OGG Capture client may detach from the GoldenGate Capture process, causing issues with data replication. In this article, we will explore the concept of OGG Capture client detachment, its causes, and how to troubleshoot and resolve the issue.
To resume data replication, you may need to:
Look at the timestamps immediately preceding and following the detachment message. If the detachment was unexpected, GoldenGate will usually log an error code (e.g., OGG-02071 or OGG-00665 ) right before it. Step 2: Examine the Database Alert Log