Ogg-01184 Expected 4 Bytes But Got 0 Bytes In Trail

Solving the OGG-01184 Error: "Expected 4 Bytes But Got 0 Bytes in Trail"

If the Extract process was terminated abruptly (e.g., a server crash or a kill -9 command) while writing to the current trail file, the file may be "truncated." The file exists and has a size greater than 0, but the data stream cuts off in the middle of a record. When the Replicat reaches this cut-off point, it expects the next chunk of data but hits the EOF.

Option C: Re-extracting Data

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 ogg-01184 expected 4 bytes but got 0 bytes in trail

Prevention

8. Escalation

on Linux) and compare it against the RBA where the error occurred. Reposition the Process: Solving the OGG-01184 Error: "Expected 4 Bytes But

Solution 3: Handling Corruption (Last Resort)

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 Prevention Best Practices Prevention 8

Configure Purge Rules

: Ensure PURGEOLDEXTRACTS with MINKEEP is configured on the source so trail files aren't deleted before they can be used for recovery.