Ogg-01184 Expected 4 Bytes But Got 0 Bytes In Trail May 2026

The error message OGG-01184: Expected 4 bytes but got 0 bytes in trail is the Oracle GoldenGate equivalent of a "sudden death" notification. It is a low-level I/O error that indicates the Extract process reached the end of a trail file expecting to find a complete record header (4 bytes) but found nothing but empty air.

When this happens, your target database stops synchronizing. Data latency begins to grow. And if not handled correctly, you risk data divergence between source and target. ogg-01184 expected 4 bytes but got 0 bytes in trail

Reposition the reader: After the new trail is created, use ALTER [PROCESS_NAME], EXTSEQNO [new_seq_no], EXTRBA 0 to point the Pump or Replicat to the start of the new file. 2. Automatic Trail Recovery (OGG 12.2+) The error message OGG-01184: Expected 4 bytes but

Reference Official Support: For detailed recovery steps, Oracle documentation frequently points to Doc ID 1138409.1 on My Oracle Support, which provides specific instructions for handling trail file mismatches. Extract & Pump Abends — oracle-mosc Data latency begins to grow

; it should automatically fetch the missing data from the source trail files. Oracle Help Center Option 3: Manual Trail Regeneration (ETROLLOVER)