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

Understanding OGG-01184: Trail File Mismatch The error OGG-01184 typically occurs when an Oracle GoldenGate (OGG) process (Extract or Replicat) attempts to read a record from a trail file, but the file ends prematurely or is corrupted. Specifically, the process expected a 4-byte length header for a data record but encountered 0 bytes (EOF). Common Root Causes

: Multiple Extract processes accidentally configured to write to the same trail file, causing them to overwrite each other's data. Oracle Communities Troubleshooting Steps Verify Trail File Size ogg-01184 expected 4 bytes but got 0 bytes in trail

Then re-sync missing data from source using initial load or GoldenGate’s REPLICAT SPECIALRUN. Compare the current write position of Extract with

Network Interruptions: For Pump processes, a network glitch during the transfer of trail files from source to target can result in a truncated file on the target side. you have a gap.

Step 3: Check Disk Space

df -h /u01/gg/dirdat

Compare the current write position of Extract with the read position of Replicat. If Extract has passed the bad offset but Replicat cannot read it, you have a gap.