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From: Kiran K V <[email protected]>
To: [email protected]
Subject: Query regarding support of test_decoding and PGReplicationStream with Standby Logical Replication
Date: Fri, 11 Jul 2025 17:08:26 +0530
Message-ID: <CAGv0ivo-mWbs946rzjsAS3E7URhofQSbt3kX__hq7ysLScq3DQ@mail.gmail.com> (raw)

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-stre...

Regards,
Kiran

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