Ogg-01184 Expected 4 Bytes But Got 0 Bytes In Trail !!hot!! Review

The error OGG-01184: Expected 4 bytes but got 0 bytes in trail 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

If Logdump cannot read the record or shows an early EOF (End of File), the trail is confirmed as corrupted. Oracle Forums 2. Automatic Trail Recovery ogg-01184 expected 4 bytes but got 0 bytes in trail

6. Preventive Measures

• Disable OS-level caching for trail files (use DIRECTIO if possible)
• Avoid using NFS for trail storage; prefer local mount or SAN with proper locking
• Set proper buffer parameters:

  -- In Extract parameter file
  FLUSHWARNINGMS 2000
  BUFFERMB 64
  

• Monitor trail usage: info extract <name>, showch
• Regularly backup trail files during high-volume loads
• Upgrade GoldenGate (older versions more prone to this error)

Here is the surgical procedure to restore order: The error OGG-01184: Expected 4 bytes but got