Ogg-01184 Expected 4 Bytes But Got 0 Bytes In Trail [repack] Online
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
If the source Extract or Pump is the one failing, force it to start a new trail file to skip the corrupted segment: ALTER [process_name], ETROLLOVER .
If only the very end of the file is corrupted, you may be able to skip the current trail and start from the next sequence number: ALTER EXTRACT , EXTSEQNO , EXTRBA 0
If a Data Pump is writing to a remote target trail over a flaky network connection, or if the underlying server experiences a sudden power loss, kernel panic, or hard reboot, unbuffered writes may be lost. The operating system's file cache might write a partial block without finishing the necessary tail blocks. 3. Concurrent File Access or Antivirus Locking ogg-01184 expected 4 bytes but got 0 bytes in trail
The error ogg-01184 expected 4 bytes but got 0 bytes occurs when GoldenGate’s reader reaches a point in the trail file where it expects to read the header, but the file ends abruptly. The system reads 0 bytes instead of 4.
If you need help resolving this issue in your environment, please let me know: OGG-01184 - Oracle GoldenGate Error Messages
The GoldenGate process was reading a trail file and expected to find a 4-byte record trailer (a marker indicating the end of a record). Instead, it encountered 0 bytes (an empty space or end of file) at a specific Relative Byte Address (RBA). Alter the Pump/Replicat to start at the beginning
To help me tailor a more specific recovery strategy, could you tell me whether this error is occurring on your or Target Replicat process? Additionally, sharing your GoldenGate version or whether you have adequate disk space on the target server would be very helpful. Share public link
When an OGG-01184 crash occurs, you must identify exactly how much data is corrupt before deciding whether to repair or regenerate the trail file.
Observe the last good record before 4820192 . Is there a gigantic transaction? A LOB update? A BLOB ? Large transactions are often culprits because they span multiple trail blocks. If only the very end of the file
If the error occurs on the source side's Data Pump process, the typical solution is to have the process roll over to a new trail file:
With this article, you now have both the surgical tools and the strategic vision to conquer OGG-01184. Good luck, and may your trails always be intact.
The OGG-01184 error is a critical, yet common, issue encountered in Oracle GoldenGate environments. It typically occurs in the Extract or Pump process and indicates a corruption or inconsistency within the trail file, frequently caused by abrupt process terminations, network interruptions, or storage issues.
Identify the specific trail file, sequence number, and RBA mentioned in the ggserr.log or the process report file. Example: ./dirdat/no000007, seqno 7, RBA 246849346 Step 2: Check for Process Termination
To prevent this error from disrupting your production environments in the future, implement the following operational safeguards: