Advanced Logdump Investigation: Silent Column Misalignment from a Stale SOURCEDEFS File

The previous investigation had an abend and an error code to start from. This one is harder precisely because there isn’t one — Replicat is running, lag is zero, the report file is clean, and yet a nightly reconciliation job is flagging rows where the target’s EMAIL column contains what looks like a phone number. When replication looks completely healthy but the data is wrong, the investigation has to start from the data itself, not from a log. ...

July 9, 2026 · 7 min · mardaff

Troubleshooting GoldenGate Replication with Logdump: A Real Investigation Walkthrough

When Replicat abends, the error message tells you what failed, but rarely why. INFO REPLICAT and the report file point you at a table and an error code — to actually understand the data that caused it, you need to open the trail file itself with Logdump, GoldenGate’s trail-file inspection utility. This post walks through a real investigation end to end, from the initial abend to the actual root cause sitting inside the raw record bytes. ...

July 9, 2026 · 7 min · mardaff