On Thu, Jul 24, 2014 at 9:32 PM, Robert Haas <robertmh...@gmail.com> wrote:
> On Wed, Jul 23, 2014 at 3:53 PM, Rohit Goyal <rhtgyl...@gmail.com> wrote:
> > Hi All,
> > On Wed, Jul 23, 2014 at 5:01 PM, Rohit Goyal <rhtgyl...@gmail.com>
> >> Hi All,
> >> I am doing programming with postgresql source code. I want to find out
> >> function which can give me Least active transaction id currenty in the
> >> system.
> >> Is there any function which can give me that?
> >> Regards,
> >> Rohit Goyal
> > 1> I know that somewhere there is an active transaction list in
> > At any point of time, I want to get the smallest transaction present in
> > active tx list or I want to get the transaction id before which all
> > transaction smaller than that are committed/aborted.
> > Is there any function which can give me this value?
> See the RecentXmin calculation in GetSnapshotData.
> This was really -2 helpful.
1. Can I use this xmin variable directly anytime anywhere in my code as it
is a global variable.
2. What is the difference b/w recentXmin and RecentGlobalXmin. I read the
description but any small detail can clear my mind. :)
Thanks in advance!!
> > 2> I found a function giving GetStableLatestTransactionId(), please tel
> > what this function gives. I was not able to understand the description
> > above it.
> I don't know how to help with this; the description seems clear to me.
> This is not important now, as you have already told me the variable and
file for recentXmin.:)
> Robert Haas
> EnterpriseDB: http://www.enterprisedb.com
> The Enterprise PostgreSQL Company