Ogg-01184 Expected 4 Bytes But Got 0 Bytes In Trail =link=
ERROR OGG-01184 Oracle GoldenGate Delivery for Oracle, rep1.abend: Expected 4 bytes but got 0 bytes in trail file ...
Alter the Replicat to skip to the beginning of the next trail file in the sequence: GGSCI > ALTER REPLICAT rep_prod, EXTSEQNO 1235, EXTRBA 0 Use code with caution. Restart the Replicat process: GGSCI > START REPLICAT rep_prod Use code with caution. Verify the status: GGSCI > INFO REPLICAT rep_prod Use code with caution.
Maya stared at the hex dump. The stream was pristine — checksums matched, no corruption markers. But at the very end, where four bytes of trailing metadata should have been, there was nothing. Not zeros. Not nulls. Absence.
When you see this error, follow these diagnostic steps before attempting any fix.
In the ggsci console, alter the process to skip the bad trail block or roll over to a fresh trail file: ALTER EXTRACT , ETROLLOVER Use code with caution. ogg-01184 expected 4 bytes but got 0 bytes in trail
Warning: Skipping to the next file may result in missing data if the corruption happened mid-transaction. Data drift must be verified using Oracle Veridata or manual script checks.
The 4 bytes referenced in the error message refer to the . In OGG trail files, each logical record is preceded by a 4-byte integer that indicates the total length of the following data payload. This design allows GoldenGate processes to read the file sequentially, knowing exactly how many bytes to read for the next record.
In remote trail scenarios, network interruptions can lead to mismatched record lengths between the source and target files.
Open the problematic trail file identified in the error log: Logdump 1 > open ./dirdat/et000001234 Use code with caution. Move to the exact offset where the error occurred: Logdump 2 > pos 104857600 Use code with caution. Try to read the next record: Logdump 3 > next Use code with caution. ERROR OGG-01184 Oracle GoldenGate Delivery for Oracle, rep1
: If the trail is severely corrupted, you may need to perform an ETROLLOVER
The complete error syntax typically looks like this in the Oracle GoldenGate error log: ERROR OGG-01184 Expected 4 bytes, but got 0 bytes, in trail ./dirdat/et000015, seqno 15, reading record trailer token at RBA 246849346.
Never use hard terminal kills ( kill -9 ) on active Oracle GoldenGate processes unless absolutely necessary. Always use the internal STOP command via the GGSCI command line utility.
The error message typically presents in the GoldenGate error log ( ggserr.log ) as follows: Verify the status: GGSCI > INFO REPLICAT rep_prod
2025-05-15 10:23:45 ERROR OGG-01184 Oracle GoldenGate Delivery for Oracle, rep1.prm: Expected 4 bytes but got 0 bytes in trail file /u01/ggate/dirdat/aa000123 (offset 0:0). Possibly the trail file is truncated, corrupted, or not properly flushed.
To minimize the chances of recurring OGG-01184 errors, apply these engineering practices within your Oracle GoldenGate environment:
When data replication halts due to trail file corruption, immediate troubleshooting is required to prevent data lag from compounding. Understanding the Anatomy of OGG-01184