Query regarding support of test_decoding and PGReplicationStream with Standby Logical Replication

Hi Kiran,

Are we trying to perform logical replication from create replication slots on a standby server and use logical decoding plugins(JDBC PGReplicationStream API) to stream changes from the standby
Is my understanding correct?

            Hi,

I have a question regarding the new feature introduced in PostgreSQL 16 that enables logical replication from a standby server.

Currently, we are using a standalone instance of PostgreSQL 16 and performing logical replication by creating replication slots and utilizing the JDBC replication stream API (PGReplicationStream) with the test_decoding plugin.

Could you please confirm whether this approach of logical replication is supported from a standby system? Specifically, does the standby system support the test_decoding plugin and the JDBC PGReplicationStream API for streaming changes ?

Reference to JDBC Logical replication - https://jdbc.postgresql.org/documentation/server-prepare/#example-96-create-logical-replication-stream

Regards,
Kiran

Thanks

Dinesh

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Subject: Query regarding support of test_decoding and PGReplicationStream with Standby Logical Replication

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Hi,

I have a question regarding the new feature introduced in PostgreSQL 16 that enables logical replication from a standby server.

Currently, we are using a standalone instance of PostgreSQL 16 and performing logical replication by creating replication slots and utilizing the JDBC replication stream API (PGReplicationStream) with the test_decoding plugin.

Could you please confirm whether this approach of logical replication is supported from a standby system? Specifically, does the standby system support the test_decoding plugin and the JDBC PGReplicationStream API for streaming changes ?

Reference to JDBC Logical replication - https://jdbc.postgresql.org/documentation/server-prepare/#example-96-create-logical-replication-stream

Regards,
Kiran

Hi Dinesh,

Yes, that is correct.

Regards,
Kiran

On Tue, Jul 15, 2025 at 11:43 PM DINESH NAIR <Dinesh_Nair@iitmpravartak.net>
wrote: