Ogg-01184 Expected 4 Bytes But Got 0 Bytes In Trail 【Works 100%】

This means GoldenGate expected to read 4 bytes of data (like a length field) but received nothing (0 bytes), halting the process. The error points to a specific trail file ( seqno ) and a specific Relative Byte Address ( RBA ) where the corruption occurred.

This reduces the impact of corruption to a single smaller file.

: Interrupted transfers between source and target can lead to incomplete files. Improper Shutdowns

: Killing OGG processes or OS-level crashes while writing to trails. Disk Space Issues ogg-01184 expected 4 bytes but got 0 bytes in trail

Use ALTER REPLICAT , EXTTRAILSOURCE , RBA to move past the error. Note that this may result in data loss for that specific record.

The error message typically looks like this in your ggserr.log or process report file:

Expected 3,number,0 bytes, but got 4,number,0 bytes, in trail 0, seqno 1,number,0, reading record trailer token at RBA {2, Oracle Help Center Extract & Pump Abends - Oracle Communities This means GoldenGate expected to read 4 bytes

Two Extract groups mistakenly writing to the same trail file name, leading to overwritten and malformed record headers. Troubleshooting and Recovery Strategies

The ogg-01184 expected 4 bytes but got 0 bytes in trail error, while alarming at first, is a well-documented and predictable issue in Oracle GoldenGate environments. By understanding that it signals a failure to read the necessary 4-byte header of a trail record, administrators can systematically diagnose the problem. The key to successful recovery lies in using the logdump utility to inspect the trail file and then choosing the appropriate method—whether a forward checkpoint repositioning or a clean trail rollover. With a clear understanding of the underlying mechanisms and a structured approach to problem-solving, this error does not have to bring data replication to a standstill.

When faced with OGG-01184, the standard action recommended by Oracle is to , as the trail may be irrecoverably corrupted. However, seasoned DBAs often use the following manual recovery steps: : Interrupted transfers between source and target can

If the file size on disk is the RBA mentioned in the error message, the file is physically truncated. 3. Check for Paired Errors Often, OGG-01184 is accompanied by companion errors like:

Faulty storage, memory issues, or filesystem corruption can corrupt the trail file. In such cases, the error is a symptom rather than the root cause.

The mismatch between the expected block size and the actual file length typically happens due to one of the following environmental or operational triggers: