On every commit, postgres flushes WAL to disk through direct IO (configurable via wal_sync_method) to guarantee durability. Data files only need to be in shared buffers, can be flushed to disk later. My question is, on every commit, does postgres…
We use postgresql as a database. For the backup part, we store full cluster backups and wal files to allow point in time restoration of our database. Our wal files take up quite a bit of space when compared to…
I'm starting from a scenario where a PostgreSQL instance is not configured for logical replication and has a table T with X rows. Now, when I'll enable the logical replication, create a replication_slot and a publication for the table T…
We're using Debezium as a change data capture connector for PostgreSQL (actually RDS). If for any reason the debezium connector has a terminal failure, the WAL will continue to grow until either debezium is fixed, or the server runs out…
I couldn't find a definite answer for my concerns, so I might as well ask it from you guys! Long story short: We need to perform an UPDATE command on roughly 400M rows. The command could be modified to work…
I'm trying to understand more about the apacheAGE extension therefore I'm reading the inner workings of PostgreSQL. From what I understand every operation that alters the table is written at the WAL buffer, but after it is commited/aborted it is…
due to a bad foreign key, we had some non written inserts in to database, but i have the wal files generated when this actions, just a few, so im wondering if is possible to decrypt them and read the…