Plz enter pg_wal

And pg_archiveclean

In linux terminal

Do not manually delete the WAL files in PGDATA/pg_wal.

These contain the active WAL files for the current PostgreSQL cluster; deleting them could render the database unrecoverable.

pg_archivecleanup is primarily for the WAL archive directory, not for arbitrarily clearing active PostgreSQL pg_wal files.

If the Railway volume is full, you should first increase disk space/volume capacity to make it available for Postgres to start, rather than deleting WAL files. Railway supports volume resizing; when the volume is 100% full, offline resizing may even be necessary.

Once Postgres can start, investigate why the WAL files weren't reclaimed. Common causes include:

Replication slot stuck;

Archiving failure;

Prolonged replication/recovery time;

Checkpoint/WAL retention configuration issues.