55.55. pg_subscription

55.55. `pg_subscription`
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55.55. `pg_subscription` #

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

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.

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

Table 55.55. 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.

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.

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55.55. pg_subscription #

55.55. `pg_subscription` #