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

Record the current SCN on the source database for all replicated tables:

Navigate to the dirdat directory and check the file size: ls -l ./dirdat/no000007 Use code with caution.

Verify that the file actually exists and check its size to understand how severely it is truncated. ls -l /path/to/goldengate/dirdat/xx00000X Use code with caution. Step 3: Check for Disk Space

This guide delivers the root causes, immediate workarounds, and permanent fixes to resolve this error. Understanding the Error

on the target system to prevent overlapping write conflicts. ogg-01184 expected 4 bytes but got 0 bytes in trail

: GoldenGate writes data sequentially into trail files located in the dirdat directory. Each transaction record wrapped into the file contains a precise structure: a header, a data payload, and a closing token (the trailer).

The source Extract is generating a trail format that the target Replicat does not understand.

Resolving this error requires a methodical approach. Follow these steps in order to minimize data loss and get your replication back online.

If the error is on a Data Pump ( EXTRACT process), replace REPLICAT with EXTRACT in the command. Record the current SCN on the source database

If the process's input checkpoint position is greater than the actual size of the trail file, it will encounter this error because it is trying to read "ghost" data at the end of the file. Version Incompatibility:

GGSCI> ALTER REPLICAT your_replicat_name, EXTSEQNO your_seqno, EXTRBA your_rba GGSCI> START REPLICAT your_replicat_name

When a process throws OGG-01184 , the architecture experiences the following structural break:

On the system, delete or move the corrupted trail file out of the dirdat directory. Step 3: Check for Disk Space This guide

Is the error occurring on the or the target (Replicat) ? Have you checked the available disk space on both servers? What Oracle GoldenGate version are you running?

Distributed cluster file systems experience file locking anomalies or split-brain scenarios where multiple Server processes access the same file. 📋 Comprehensive Resolution Protocols

Ensure target paths are explicitly whitelisted to prevent remote file allocation issues.

If the file system hosting the GoldenGate trail files ( dirdat directory) runs out of space, GoldenGate cannot complete writing the current record block. It writes a partial record header but 0 bytes of the expected trailing data. 4. GoldenGate Version Mismatches