Ogg-01184 Expected 4 Bytes But Got 0 Bytes In Trail [verified] -

2026-06-01 10:14:22 ERROR OGG-01184 Expected 4 bytes, but got 0 bytes, in trail ./dirdat/et000012, seqno 12, reading record trailer token at RBA 4589214. Use code with caution.

If a remote Data Pump is writing directly over a network share (like NFS or CIFS) and the network drops, the trail file can become fragmented or prematurely closed.

When a process abends with this error, use the following structured workflow to identify the damage and restore replication. Step 1: Locate the Faulty RBA

Execute ETROLLOVER on the primary extract to cleanly start a brand new sequence number, ensuring it doesn't overwrite old historical data blindly. ogg-01184 expected 4 bytes but got 0 bytes in trail

logdump> pos 4820192 logdump> count 1

| Cause | Probability | Description | |-------|-------------|-------------| | | High | Extract or Pump process killed mid-write (kill -9, power failure, OOM killer) | | Filesystem full | Medium-high | Trail file write interrupted because disk filled to 100% | | Network corruption | Medium | NFS or network drive corruption during file transfer | | Manual editing/corruption | Low | Someone opened trail file in text editor or binary modification | | Version mismatch | Low | Reading trail written by newer OGG version with different record structure |

A concluding 4-byte marker that validates the completion of the individual record block. Why the Error Occurs 2026-06-01 10:14:22 ERROR OGG-01184 Expected 4 bytes, but

Troubleshooting Oracle GoldenGate Error OGG-01184: Expected 4 Bytes But Got 0 Bytes in Trail

user wants a long article about the error message "ogg-01184 expected 4 bytes but got 0 bytes in trail". This appears to be an OGG (Oracle GoldenGate) error. I need to provide a comprehensive guide explaining the error, its causes, troubleshooting steps, and solutions. I should search for relevant information. search results show several relevant links. Let's open them to gather more details. opened pages provide some information. Let's search for more details and solutions.'s open some of these results. need to gather more detailed information about the error, its causes, and solutions. Let's search for "OGG-01184 cause" and "OGG-01184 resolution". search for "OGG-01184 cause" didn't yield relevant results. Let's search for "OGG-01184 trail corruption".'s search for "OGG-01184 expected 4 bytes but got 0 bytes in trail solution". have gathered some information. Let's search for "OGG-01184 expected 4 bytes but got 0 bytes in trail etrollover".'s open result 3.'s search for "OGG-01184 alter extract etrollover".'s open result 6.'s search for "OGG-01184 expected 4 bytes but got 0 bytes in trail Oracle support". have gathered sufficient information from various sources. The article will include an introduction, causes, solutions, preventative measures, and a conclusion. I will structure the article with headings and subheadings, and cite the relevant sources. Now I will write the article. managing Oracle GoldenGate, few errors are as immediately alarming as OGG-01184 Expected 4 bytes, but got 0 bytes, in trail . It is a critical issue that causes replication processes to fail. This guide will explain what this error means, break down its root causes, and provide a step-by-step action plan to resolve it and prevent it from recurring.

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 When a process abends with this error, use

(from GoldenGate log file, ggserr.log ):

Here is a deep technical narrative regarding this error, structured as a forensic investigation.

When the filesystem hosting the trail directory runs out of space, GoldenGate cannot write the complete 4-byte header and subsequent data. The file is truncated at the point where the write failed. Replicat later reads this truncated file and encounters 0 bytes instead of the expected header.

Are your source and target platforms running on different operating systems or ? What version of Oracle GoldenGate are you currently using? Share public link

The appropriate recovery method depends on which GoldenGate process reported the error and where the corruption occurred.