Hi admins, I'm just in testing phase of logical replication from standby server on postgresql 16. I have some expirience in logical replication on postgresql 14. Common behaviour was that after starting logical replication of all tables in database I have some additional pg_*_sync_* replication slots. After all tables were synchronized all *sync* replications slots disapeared and only replication slot that I created stays in place. On logical replication from standby I see folowing state on my standby server: postgres=# SELECT * FROM pg_catalog.pg_replication_slots; slot_name | plugin | slot_type | datoid | database | temporary | active | active_pid | xmin | catalog_xmin | restart_lsn | confirmed_flush_lsn | wal_status | safe_wal_ size | two_phase | conflicting -------------------------------------------+----------+-----------+--------+----------+-----------+--------+------------+------+--------------+--------------+---------------------+------------+---------- -----+-----------+------------- pg_204804_sync_202370_7340192741191578195 | pgoutput | logical | 168324 | c3_test | f | t | 2105026 | | 2006589 | C6E/50000B18 | | reserved | | f | f pg_204804_sync_201130_7340192741191578195 | pgoutput | logical | 168324 | c3_test | f | t | 2105025 | | 2006589 | C6E/50000B18 | | reserved | | f | f c3_test_subscription | pgoutput | logical | 168324 | c3_test | f | t | 2103843 | | 2006589 | C6E/50000AE0 | C6E/50000B18 | reserved | | f | f (3 rows) I'm replicating small database of 25MB with less thant 140 tables. As I can see database is sucessfully replicated but both *sync* replication slots stay in place. Is this new behaviour for logical replication from standby, or did I miss something? Best regards!
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