Ogg Capture Client Successfully Detached From Goldengate Capture [better]

This log entry occurs under two distinct categories: normal operational procedures and unexpected system anomalies. Normal Operational Triggers

In Oracle Integrated Capture mode, if the Extract is idle for an extended period (defined by database resource manager settings), the database server may detach the client session to free up resources. While the Extract process remains running on the OS level, the database session is detached. OGG will typically attempt to re-attach automatically when new data arrives.

This message indicates that a downstream extraction process—typically an Integrated Extract—has disconnected from its logmining server component inside the source database. It confirms a clean shutdown or suspension of the capture activity, meaning the detachment happened gracefully without corrupting the process state. Core Architecture: Why Detachment Happens

2021-06-06 07:54:22.697000000 AM +02:00 OGG Capture client successfully detached from GoldenGate Capture OGG$CAP_INEXT1 (OS pid=17884). This log entry occurs under two distinct categories:

When monitoring Oracle GoldenGate (OGG) environments, seeing the message in your alert logs or database trace files can cause immediate concern. While it sounds like a critical failure, this message is a standard operational notification regarding the interaction between the Oracle Database LogMiner infrastructure and the GoldenGate Extract process. What Does This Message Mean?

The most common cause of an unexpected detachment is the inability of the logmining server to find the required redo or archive logs. In Oracle GoldenGate (Integrated Mode), the database mining server must have access to a continuous sequence of logs.

: Review the GoldenGate event log ( VIEW GGSEVT ) or the Extract report file ( VIEW REPORT ) for errors like ORA-03113 (End-of-file on communication channel) which may have triggered the detachment. OGG will typically attempt to re-attach automatically when

The LogMiner server (which extracts transaction data) may become hung or stuck on a particular transaction. If LogMiner cannot progress, the Extract client may time out and detach, or simply stop receiving data, resulting in a detachment upon restart. 3. Missing Redo/Archive Logs

The EXTRACT process is connected to the database to read change data.

GGSCI> VIEW GGSEVT

The log message becomes critical when it appears unexpectedly, particularly when followed immediately by a process (Abnormal End) or database errors.

If you see a status of DETACHED , the capture server is running but waiting for an Extract client to attach to it. This is normal if an Extract is stopped, but abnormal if you expected the process to be running.

In Integrated Capture, the database’s internal Capture process can temporarily detach clients during specific operations, such as: or simply stop receiving data

While the message itself simply confirms a disconnection, the root cause for the detachment generally falls into one of three categories: 1. Normal Administrative Actions

The message confirms a successful, graceful transition from ATTACHED to DETACHED .