Understanding WAL nomenclatureThere are some PostgreSQL functions that reports an information such as 68A/16E1DA8. But what does it mean? The documentation states that it is a transaction log location. Let me try to explain it in details. What is WAL? WAL is an abbreviation of Write-Ahead Log. That is how PostgreSQL named the transaction log (also known as REDO log). Every modern database system has one. It is basically a hist
