This message indicates that an Oracle GoldenGate (OGG) Extract process has successfully disconnected from the source database. 📌 Meaning of the Message

Compare lag before and after the detachment. Reattachment should take < 2 seconds. If longer, check database load.

Errors like OGG-01044 occur if the Extract parameter file refers to a trail that hasn't been officially added via 3. Step-by-Step Troubleshooting Guide Follow these steps to diagnose and restart the process: Step 1: Identify the Primary Error The "detached" message is rarely the root cause. Review the ggserr.log

Q3: The message appears, but the extract process is still in memory?
A: This indicates a mis-timestamped log or a zombie process. In normal cases, a detached client = stopped process. Use kill -3 on the process ID to verify.

It confirms that the database resources used by the capture process (memory in the STREAMS_POOL , background processes) have been released. 2. Common Causes for Detachment

GGSCI> STOP EXTRACT EXT1

Integrated Capture Mode

Modern OGG (12c and later) uses Integrated Capture. Here, the Extract process does not directly read the redo logs. Instead, it acts as a client to a background server process inside the Oracle database known as the GoldenGate Capture process (also part of the logical replication framework inside the database engine).

Troubleshooting and Best Practices

While a "successful detach" is usually positive, the following conditions require attention: