Ogg-01184 Expected 4 Bytes But Got 0 Bytes In Trail |best| File

The trail was empty because the trail had been wiped. And whatever wiped it was still listening.

When a process reads a trail file and encounters instead of the expected 4 bytes, it means the process hit an unexpected End-of-File (EOF) or a block of null/empty data right where a valid data header was supposed to be. Common Causes of OGG-01184

For more in-depth, tailored troubleshooting on your Oracle GoldenGate environment, please consider reaching out to Oracle Knowledge Management for their Doc ID 1138409.1.

Depending on whether the issue occurs on your Source system (Extract / Pump) or Target system (Replicat), select one of the following systematic repair pathways. ogg-01184 expected 4 bytes but got 0 bytes in trail

The mismatch between the expected block size and the actual file length typically happens due to one of the following environmental or operational triggers:

Check the ggserr.log for the exact error line. Note:

For database administrators and data engineers working with Oracle GoldenGate (OGG), few things are as frustrating as a replication process that suddenly abends (abnormally ends) with a cryptic error message. One such notorious error is , accompanied by the phrase expected 4 bytes but got 0 bytes in trail . The trail was empty because the trail had been wiped

With these details, I can provide the exact command sequence needed to repair your environment. Share public link

If the trail file is fundamentally readable except for the final incomplete transaction block, you can force the reading process to consider the current truncated point as its hard endpoint.

Are you seeing this error on a ? Let me know the specific GoldenGate version you are running and if any OGG-01705 messages appeared alongside it so I can provide exact syntax instructions. Share public link Common Causes of OGG-01184 For more in-depth, tailored

Alter the Pump/Replicat to start at the beginning of the next available sequence number. ALTER PUMP , EXTSEQNO , EXTRBA 0 4. Best Practices to Prevent OGG-01184

This error typically halts the Extract or Replicat process, causing data synchronization delays. Understanding its root cause, implications, and step-by-step resolution is critical for maintaining high availability and data integrity.

Stop the source process (Extract or Pump) that generates the corrupt trail file.

Look directly inside the GoldenGate report file ( .rpt ) or the overall alert log ( ggserr.log ). The error message provides essential tracking fields:

The hydrophone had been listening to a trench no one had mapped. And something down there, she realized with a cold wash of certainty, did not want to be known. It had reached up through the file system — not corrupting, not deleting, just un-writing the last four bytes of every copy.