Sometimes, the input checkpoint position for a Pump or Replicat is greater than the actual physical size of the trail file, leading the process to seek data that does not exist.
If the local trail on the source is corrupted, you must re-position the Extract process to a point in the database logs (SCN or timestamp) prior to the corruption and regenerate the trails. Prevention Best Practices
Check the GoldenGate Error Log (usually ggserr.log ) to find the specific sequence number and RBA where the error occurred. ogg-01184 expected 4 bytes but got 0 bytes in trail
Compare the RBA mentioned in the error with the actual size of the trail file on the disk. If the RBA is larger than the file size, the file is definitely truncated. 3. Resolution Strategies
The error is a critical Oracle GoldenGate message indicating that a process (usually a Pump or Replicat) failed to read a mandatory 4-byte record trailer token from a trail file. This typically occurs when a record is incomplete or the file has been truncated prematurely. Understanding the Root Causes Sometimes, the input checkpoint position for a Pump
If you are using Oracle GoldenGate 12.2 or higher, you can often recover remote trails automatically: Stop the Pump process on the source. Delete the corrupted trail file from the target.
Host trail files on stable, high-performance filesystems to reduce the risk of I/O related corruption. OGG-01184 - Oracle GoldenGate Error Messages Compare the RBA mentioned in the error with
The "expected 4 bytes but got 0" condition signifies that the GoldenGate process reached a Relative Byte Address (RBA) where it expected to find metadata, but instead encountered the end of the file.
Always use the STOP command in GGSCI rather than killing OS processes.