Re: [ADMIN] Database Create Date
Hi Jim, Thanks for your reply. Well..there is no particular reason for knowing the database create date, but I feel this information is something which should be known, especially in a development environment where multiple database are created and deleted. This helps in keep historical information. Regards -Original Message- From: Jim C. Nasby [mailto:[EMAIL PROTECTED] Sent: Friday, January 12, 2007 11:01 PM To: Negandhi, Nishith Cc: pgsql-admin@postgresql.org Subject: Re: [ADMIN] Database Create Date On Tue, Jan 09, 2007 at 09:22:49AM -0600, Negandhi, Nishith wrote: Hi, I need to know the create date of databases on PosegreSQL. PG_DATABASE does not provide this information. Are there any other system catalogs that can provide the above information?? This is the second time I remember someone asking for this, so maybe it's worth adding... why is it you need to know when the database was created? -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
Re: [ADMIN] Database Create Date
Στις Τρίτη 09 Ιανουάριος 2007 18:10, ο/η Andy Shellam (Mailing Lists) έγραψε: Achilleas Mantzios wrote: I was able to find that in FreeBSD the -U in ls (1) does the job. However i could not find any inode creation time related info for linux (ext3). Anyone has any clue on that? I believe ls -l by default shows the created time, you can switch to show the last modified time using ls -l --time=atime No, it seems ext3 does not keep this info. (See also Tom's answer). Also in FreeBSD (at least, 6.1) there is no -U option to ls; there is a -u option but this shows the last access, not the creation time. It must have been introduced somewhere in the 6.1-STABLE cycle. For my dev machine (6.1-STABLE #8) -U support is included, whereas in my other pet machine 6.1-PRERELEASE #1 it is not. -- Achilleas Mantzios ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
Re: [ADMIN] Database Create Date
On Wed, Jan 10, 2007 at 10:00:37 +0200, Achilleas Mantzios [EMAIL PROTECTED] wrote: Στις Τρίτη 09 Ιανουάριος 2007 18:10, ο/η Andy Shellam (Mailing Lists) έγραψε: Achilleas Mantzios wrote: I was able to find that in FreeBSD the -U in ls (1) does the job. However i could not find any inode creation time related info for linux (ext3). Anyone has any clue on that? I believe ls -l by default shows the created time, you can switch to show the last modified time using ls -l --time=atime Just another note on this, atime is the last access time. ctime is the real last modify time, mtime is another modify time that can be changed (which is useful after backups). atime is often disabled in ext3 file systems to reduce I/O, since it isn't all that useful. ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster
Re: [ADMIN] Database Create Date
Bruno Wolff III wrote: On Wed, Jan 10, 2007 at 10:00:37 +0200, Achilleas Mantzios [EMAIL PROTECTED] wrote: Στις Τρίτη 09 Ιανουάριος 2007 18:10, ο/η Andy Shellam (Mailing Lists) έγραψε: Achilleas Mantzios wrote: I was able to find that in FreeBSD the -U in ls (1) does the job. However i could not find any inode creation time related info for linux (ext3). Anyone has any clue on that? I believe ls -l by default shows the created time, you can switch to show the last modified time using ls -l --time=atime Just another note on this, atime is the last access time. ctime is the real last modify time, mtime is another modify time that can be changed (which is useful after backups). atime is often disabled in ext3 file systems to reduce I/O, since it isn't all that useful. I thought it was as well to begin with - but in ls on Linux there's a separate atime and access value to the show time parameter in ls - so if atime is the last access time, what's access mean? ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
Re: [ADMIN] Database Create Date
Andy Shellam (Mailing Lists) wrote: Bruno Wolff III wrote: On Wed, Jan 10, 2007 at 10:00:37 +0200, Achilleas Mantzios [EMAIL PROTECTED] wrote: Στις Τρίτη 09 Ιανουάριος 2007 18:10, ο/η Andy Shellam (Mailing Lists) έγραψε: Achilleas Mantzios wrote: I was able to find that in FreeBSD the -U in ls (1) does the job. However i could not find any inode creation time related info for linux (ext3). Anyone has any clue on that? I believe ls -l by default shows the created time, you can switch to show the last modified time using ls -l --time=atime Just another note on this, atime is the last access time. ctime is the real last modify time, mtime is another modify time that can be changed (which is useful after backups). atime is often disabled in ext3 file systems to reduce I/O, since it isn't all that useful. I thought it was as well to begin with - but in ls on Linux there's a separate atime and access value to the show time parameter in ls - so if atime is the last access time, what's access mean? Hmm ok just done a bit of experimenting on this - atime and access show exactly the same information - mtime is an invalid value according to my Fedora 5 system. Confused. -- start paste -- ls -l / --time=mtime ls: invalid argument `mtime' for `--time' Valid arguments are: - `atime', `access', `use' - `ctime', `status' Try `ls --help' for more information. -- end paste -- ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
Re: [ADMIN] Database Create Date
On Wed, Jan 10, 2007 at 19:39:09 +, Andy Shellam (Mailing Lists) [EMAIL PROTECTED] wrote: I thought it was as well to begin with - but in ls on Linux there's a separate atime and access value to the show time parameter in ls - so if atime is the last access time, what's access mean? atime includes at least reads of the file. I don't know if it also includes writes or stats. Hmm ok just done a bit of experimenting on this - atime and access show exactly the same information - mtime is an invalid value according to my Fedora 5 system. Confused. mtime is the time you normally see, so there may not be a separate option for it on ls. ---(end of broadcast)--- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate
Re: [ADMIN] Database Create Date
Guys..I don't hv access to the server directely. Is it possible to get the DB creation date from the system catalog.?? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bruno Wolff III Sent: Wednesday, January 10, 2007 2:16 PM To: Andy Shellam (Mailing Lists) Cc: pgsql-admin@postgresql.org Subject: Re: [ADMIN] Database Create Date On Wed, Jan 10, 2007 at 19:39:09 +, Andy Shellam (Mailing Lists) [EMAIL PROTECTED] wrote: I thought it was as well to begin with - but in ls on Linux there's a separate atime and access value to the show time parameter in ls - so if atime is the last access time, what's access mean? atime includes at least reads of the file. I don't know if it also includes writes or stats. Hmm ok just done a bit of experimenting on this - atime and access show exactly the same information - mtime is an invalid value according to my Fedora 5 system. Confused. mtime is the time you normally see, so there may not be a separate option for it on ls. ---(end of broadcast)--- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
[ADMIN] Database Create Date
Hi, I need to know the create date of databases on PosegreSQL. PG_DATABASE does not provide this information. Are there any other system catalogs that can provide the above information?? Thanks
Re: [ADMIN] Database Create Date
Negandhi, Nishith wrote: Hi, I need to know the create date of databases on PosegreSQL. PG_DATABASE does not provide this information. Are there any other system catalogs that can provide the above information?? Thanks !DSPAM:37,45a3b385137101969839670! I'm sure there is (not known to me atm), but for a quick shot you could find the DB's OID from pg_database and look at the create date of pg data dir/base/db oid ---(end of broadcast)--- TIP 6: explain analyze is your friend
Re: [ADMIN] Database Create Date
Well..thats one way, however I only hv access to the web interface (i.e. phpAdmin). -Original Message- From: Andy Shellam (Mailing Lists) [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 09, 2007 9:37 AM To: Negandhi, Nishith Cc: pgsql-admin@postgresql.org Subject: Re: [ADMIN] Database Create Date Negandhi, Nishith wrote: Hi, I need to know the create date of databases on PosegreSQL. PG_DATABASE does not provide this information. Are there any other system catalogs that can provide the above information?? Thanks !DSPAM:37,45a3b385137101969839670! I'm sure there is (not known to me atm), but for a quick shot you could find the DB's OID from pg_database and look at the create date of pg data dir/base/db oid ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
Re: [ADMIN] Database Create Date
Στις Τρίτη 09 Ιανουάριος 2007 17:36, ο/η Andy Shellam (Mailing Lists) έγραψε: Negandhi, Nishith wrote: Hi, I need to know the create date of databases on PosegreSQL. PG_DATABASE does not provide this information. Are there any other system catalogs that can provide the above information?? Thanks !DSPAM:37,45a3b385137101969839670! I'm sure there is (not known to me atm), but for a quick shot you could find the DB's OID from pg_database and look at the create date of pg data dir/base/db oid I was able to find that in FreeBSD the -U in ls (1) does the job. However i could not find any inode creation time related info for linux (ext3). Anyone has any clue on that? ---(end of broadcast)--- TIP 6: explain analyze is your friend -- Achilleas Mantzios ---(end of broadcast)--- TIP 6: explain analyze is your friend
Re: [ADMIN] Database Create Date
Achilleas Mantzios wrote: I was able to find that in FreeBSD the -U in ls (1) does the job. However i could not find any inode creation time related info for linux (ext3). Anyone has any clue on that? I believe ls -l by default shows the created time, you can switch to show the last modified time using ls -l --time=atime Also in FreeBSD (at least, 6.1) there is no -U option to ls; there is a -u option but this shows the last access, not the creation time. -- Andy Shellam NetServe Support Team the Mail Network an alternative in a standardised world ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster
Re: [ADMIN] Database Create Date
Achilleas Mantzios [EMAIL PROTECTED] writes: However i could not find any inode creation time related info for linux (ext3). I don't believe it keeps that. You could possibly look at the mod time on the PG_VERSION file ... Postgres never touches that after DB creation. This is not, however, much of a guarantee as something else could have changed it, eg a file backup/restore process. regards, tom lane ---(end of broadcast)--- TIP 6: explain analyze is your friend
