On Thu, 30 Mar 2006, Michael Fuhr wrote: > On Thu, Mar 30, 2006 at 05:20:00PM +0530, Pradeep Sharma wrote: > > Thanks for the reply. But I guess there is some communication gap between > > me and you regarding this topic. As I understood from your reply is, you > > are talking about the date of Postgres setup/installation/upgrade. > > No, I was talking about the creation time of a particular database. > > > Suppose I created a new database using the command: > > > > CREATE DATABASE <database_name> > > > > I want to know how can I get created date of the above database. > > As I mentioned, unless you logged the CREATE DATABASE statement I > don't think the creation date is stored anywhere, but you could > look at the modification times of the oldest files in the database's > directory. For example, one of my databases is named test. I can > find that database's oid by querying pg_database: > > test=> SELECT oid FROM pg_database WHERE datname = 'test'; > oid > ------- > 16388 > (1 row) > > I then list the files in that database's directory, sorted by time: > > % ls -lt $PGDATA/base/16388 | tail -2 > -rw------- 1 postgres postgres 4 Dec 6 09:39 PG_VERSION > -rw------- 1 postgres postgres 0 Dec 6 09:39 1248 > > From this output I infer that the test database was created on 6 Dec. > Most files in the directory are susceptible to being modified but I > don't think anything touches PG_VERSION, so its modification time > should reflect the database creation time unless something at the > OS level modifies it. > > Try a command like the following: > > % ls -lt $PGDATA/base/*/PG_VERSION > > You should see that each database has a copy of this file and that > each file has a different modification time (some might be within > a few seconds of each other if databases were created around the > same time, such as during a restore). > > Is this not what you're looking for? > Thanks Micheal, This solved my problem. I got the creation date of my database. -- Pradeep > -- > Michael Fuhr > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Have you searched our list archives? > > http://archives.postgresql.org >
