Re: [HACKERS] PostgreSQL Data Loss

2007-01-29 Thread desrocchi
On 27 Gen, 06:31, [EMAIL PROTECTED] (Martijn van Oosterhout) wrote: > > To repeat: If you think this may have happened DO NOT run vacuum > > now.Actually, for XID wraparound a VACUUM may actually be the right thing. > I looked at this (with guidence from Tom) and we came to the conclusion > tha

Re: [HACKERS] PostgreSQL Data Loss

2007-01-26 Thread Martijn van Oosterhout
On Sat, Jan 27, 2007 at 12:11:59AM +, Gregory Stark wrote: > If this isn't run for a very long time (how long depends on how busy the > database is, but even on extremely large databases it's usually a matter of > months, on more normal databases it would be years) then very old records seem >

Re: [HACKERS] PostgreSQL Data Loss

2007-01-26 Thread Gregory Stark
"BluDes" <[EMAIL PROTECTED]> writes: > My customer claims that he lost lots of data reguarding his own clients and > that those data had surely been saved on the database. Has this Postgres database been running for a long time? There is a regular job called VACUUM that has to be run on every tab

Re: [HACKERS] PostgreSQL Data Loss

2007-01-26 Thread Andrew Dunstan
BluDes wrote: Hi everyone, I have a problem with one of my costomers. I made a program that uses a PostgreSQL (win32) database to save its data. My customer claims that he lost lots of data reguarding his own clients and that those data had surely been saved on the database. My first guess is

Re: [HACKERS] PostgreSQL Data Loss

2007-01-26 Thread J. Andrew Rogers
On Jan 26, 2007, at 2:22 AM, BluDes wrote: I have a problem with one of my costomers. I made a program that uses a PostgreSQL (win32) database to save its data. My customer claims that he lost lots of data reguarding his own clients and that those data had surely been saved on the database.

Re: [HACKERS] PostgreSQL Data Loss

2007-01-26 Thread Zdenek Kotala
If data are deleted then they are still stored in database until VACUUM cleans them. You can look by some hex viewer, if you see some know text data there. Or I think there is also some tool which dump tuple list from pages. You can also see deleted data if you change current transaction ID. B

Re: [HACKERS] PostgreSQL Data Loss

2007-01-26 Thread Heikki Linnakangas
BluDes wrote: I made a program that uses a PostgreSQL (win32) database to save its data. What version of PostgreSQL is this? My customer claims that he lost lots of data reguarding his own clients and that those data had surely been saved on the database. My first guess is that he is the one

[HACKERS] PostgreSQL Data Loss

2007-01-26 Thread BluDes
Hi everyone, I have a problem with one of my costomers. I made a program that uses a PostgreSQL (win32) database to save its data. My customer claims that he lost lots of data reguarding his own clients and that those data had surely been saved on the database. My first guess is that he is the o