Re: Change "database system identifier" in pg_control?

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Joshua Colson <joshua.colson@xxxxxxxxxxx> writes:
> So I thought I would try to change the SYSID to 4965793265546637307 and
> have another shot at it.
> I'm not a PG guru so please let me know, is there any chance that what
> I'm doing will be successful, or am I just wasting my time?

You'd have to modify pg_resetxlog to force that value into the sysid
rather than whatever is there.  Hand-editing wouldn't work very well
because of (a) the CRC on pg_control and (b) the need to copy the
value into extant WAL segments.

			regards, tom lane


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