| From: | Craig Ringer <craig(at)2ndquadrant(dot)com> |
|---|---|
| To: | Natarajan R <nataraj3098(at)gmail(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: pg_init |
| Date: | 2019-10-09 23:52:17 |
| Message-ID: | CAMsr+YFp8QJOeMSBqnKs4sFwu+6EuJuqZOHgv+SBm+zY8crRAQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, 9 Oct 2019 at 00:33, Natarajan R <nataraj3098(at)gmail(dot)com> wrote:
> I want to read pg_database from pg_init...
>
> Is using heap_open() is possible? or else any other way is there ?
>
It's not possible from _PG_init .
I replied to a similar thread with details on how bgworkers can access
different databases; look at the archives.
The gist is that you have to register a bgworker that attaches to shared
memory and to a database (or use InvalidOid if you only want shared catalog
access), then do your work from there.
--
Craig Ringer http://www.2ndQuadrant.com/
2ndQuadrant - PostgreSQL Solutions for the Enterprise
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