Re:

On Mon, May 15, 2023 at 11:42 AM Fabrice Chapuis <fabrice636861@gmail.com> wrote:

I am using postgres v.14 on rhel8

I enabled the track_commit_timestamp parameter. 

postgres [379418]=# show track_commit_timestamp ;

┌────────────────────────┐

│ track_commit_timestamp │

├────────────────────────┤

│ on                     │

└────────────────────────┘

(1 row)

I performed a recover with the_recovery_target_time parameter. In the postgres log the following informations are present:

statement: alter system set recovery_target_time = '2023-05-15 16:10:00'

recovery stopping before commit of transaction 53013547, time 2023-05-15 16:10:00.150823+02

I would like to get the xid related timestamp with the following query:

postgres[379418]=#select pg_xact_commit_timestamp(53013547);

ERROR: function pg_xact_commit_timestamp(integer) does not exist

LINE 1: select pg_xact_commit_timestamp(53013547);

                ^

HINT: No function matches the given name and argument types. You might need to add explicit type casts.

What is the xid type and how can I cast integer value to make pg_xact_commit_timestamp to work?

Regards

Fabrice Chapuis

This is not obvious, but QUOTE that value:

select pg_xact_commit_timestamp('53013547'); 

And it figures it out!