如何删除postgres 9.4中的复制槽

时间:2015-06-15 21:05:06

标签: postgresql replication postgresql-9.4

我有要删除的复制插槽,但是当我删除时,出现了一个我无法从视图中删除的错误。有什么想法吗?

postgres=# SELECT * FROM pg_replication_slots ;
  slot_name   |    plugin    | slot_type | datoid | database | active | xmin | catalog_xmin | restart_lsn
--------------+--------------+-----------+--------+----------+--------+------+--------------+-------------
 bottledwater | bottledwater | logical   |  12141 | postgres | t      |      |       374036 | E/FE8D9010
(1 row)

postgres=# delete from pg_replication_slots;
ERROR:  cannot delete from view "pg_replication_slots"
DETAIL:  Views that do not select from a single table or view are not automatically updatable.
HINT:  To enable deleting from the view, provide an INSTEAD OF DELETE trigger or an unconditional ON DELETE DO INSTEAD rule.
postgres=#

2 个答案:

答案 0 :(得分:24)

使用pg_drop_replication_slot

select pg_drop_replication_slot('bottledwater');

请参阅the docsthis blog

复制槽必须处于非活动状态,即没有活动连接。因此,如果有使用该插槽的流式副本,则必须停止流式副本。或者您可以更改其recovery.conf,以便它不再使用插槽并重新启动它。

答案 1 :(得分:2)

作为已接受答案的补充,我想提到的是,如果插槽不存在,以下命令也不会失败(这对我很有用,因为我编写了脚本)。

select pg_drop_replication_slot(slot_name) from pg_replication_slots where slot_name = 'bottledwater';