Postgresql 中文操作指南

53.54. pg_subscription #

编目 pg_subscription 包含所有现有的逻辑复制订阅。有关逻辑复制的详情，请参阅 Chapter 31 。

The catalog pg_subscription contains all existing logical replication subscriptions. For more information about logical replication see Chapter 31.

与大多数系统目录不同，pg_subscription 在集群的所有数据库中共享：每个集群只有一个 pg_subscription 副本，而不是每个数据库一个副本。

Unlike most system catalogs, pg_subscription is shared across all databases of a cluster: there is only one copy of pg_subscription per cluster, not one per database.

普通用户无法访问列 subconninfo，因为它可能包含纯文本密码。

Access to the column subconninfo is revoked from normal users, because it could contain plain-text passwords.

Table 53.54. pg_subscription Columns

Column Type

Description

oid oid

Row identifier

subdbid oid (references pg_database.oid)

OID of the database that the subscription resides in

subskiplsn pg_lsn

Finish LSN of the transaction whose changes are to be skipped, if a valid LSN; otherwise 0/0.

subname name

Name of the subscription

subowner oid (references pg_authid.oid)

Owner of the subscription

subenabled bool

If true, the subscription is enabled and should be replicating

subbinary bool

If true, the subscription will request that the publisher send data in binary format

substream char

Controls how to handle the streaming of in-progress transactions: f = disallow streaming of in-progress transactions, t = spill the changes of in-progress transactions to disk and apply at once after the transaction is committed on the publisher and received by the subscriber, p = apply changes directly using a parallel apply worker if available (same as 't' if no worker is available)

subtwophasestate char

State codes for two-phase mode: d = disabled, p = pending enablement, e = enabled

subdisableonerr bool

If true, the subscription will be disabled if one of its workers detects an error

subpasswordrequired bool

If true, the subscription will be required to specify a password for authentication

subrunasowner bool

If true, the subscription will be run with the permissions of the subscription owner

subconninfo text

Connection string to the upstream database

subslotname name

Name of the replication slot in the upstream database (also used for the local replication origin name); null represents NONE

subsynccommit text

The synchronous_commit setting for the subscription’s workers to use

subpublications text[]

Array of subscribed publication names. These reference publications defined in the upstream database. For more on publications see Section 31.1.

suborigin text

The origin value must be either none or any. The default is any. If none, the subscription will request the publisher to only send changes that don’t have an origin. If any, the publisher sends changes regardless of their origin.