Обсуждение: reindex vs. drop index , create index
hello all, a few weeks ago I turned to REINDEXing my tables instead of DROPping and reCREATEing them. now, however, I again have problems when VACUUMing or REINDEXing these tables. Postgres states that the connection has been lost etc. the only thing helping is to DROP and CREATE the index again.... I will now again have a cronjob that at least once a week will DROP and CREATE all indexes. isn't this a bit poor of postgresql?? -- Mit freundlichem Gruß Henrik Steffen Geschäftsführer top concepts Internetmarketing GmbH Am Steinkamp 7 - D-21684 Stade - Germany -------------------------------------------------------- http://www.topconcepts.com Tel. +49 4141 991230 mail: steffen@topconcepts.com Fax. +49 4141 991233 -------------------------------------------------------- 24h-Support Hotline: +49 1908 34697 (EUR 1.86/Min,topc) -------------------------------------------------------- Ihr SMS-Gateway: JETZT NEU unter: http://sms.city-map.de System-Partner gesucht: http://www.franchise.city-map.de -------------------------------------------------------- Handelsregister: AG Stade HRB 5811 - UstId: DE 213645563 --------------------------------------------------------
On Thu, 2003-02-20 at 12:03, Henrik Steffen wrote: > a few weeks ago I turned to REINDEXing my tables instead of DROPping and > reCREATEing them. > > now, however, I again have problems when VACUUMing or REINDEXing these > tables. Postgres states that the connection has been lost etc. Can you provide the exact error message, as well as the version of PostgreSQL you're using and any relevant OS version details. Also, it sounds like PostgreSQL might be dumping core. If that's the case, providing a backtrace from the core file (using gdb) would be helpful. It would be especially helpful if you could recompile PostgreSQL with debugging symbols (./configure --enable-debug) and get a backtrace after that. Cheers, Neil -- Neil Conway <neilc@samurai.com> || PGP Key ID: DB3C29FC
hello, I am currently using 7.3.1 -- planning to upgrade soon.... sorry, I didn't save nor log the exact error message. using a SuSE Linux with kernel 2.4.20 -- Mit freundlichem Gruß Henrik Steffen Geschäftsführer top concepts Internetmarketing GmbH Am Steinkamp 7 - D-21684 Stade - Germany -------------------------------------------------------- http://www.topconcepts.com Tel. +49 4141 991230 mail: steffen@topconcepts.com Fax. +49 4141 991233 -------------------------------------------------------- 24h-Support Hotline: +49 1908 34697 (EUR 1.86/Min,topc) -------------------------------------------------------- Ihr SMS-Gateway: JETZT NEU unter: http://sms.city-map.de System-Partner gesucht: http://www.franchise.city-map.de -------------------------------------------------------- Handelsregister: AG Stade HRB 5811 - UstId: DE 213645563 -------------------------------------------------------- ----- Original Message ----- From: "Neil Conway" <neilc@samurai.com> To: "Henrik Steffen" <steffen@city-map.de> Cc: "PostgreSQL General" <pgsql-general@postgresql.org> Sent: Friday, February 21, 2003 7:40 AM Subject: Re: [GENERAL] reindex vs. drop index , create index > On Thu, 2003-02-20 at 12:03, Henrik Steffen wrote: > > a few weeks ago I turned to REINDEXing my tables instead of DROPping and > > reCREATEing them. > > > > now, however, I again have problems when VACUUMing or REINDEXing these > > tables. Postgres states that the connection has been lost etc. > > Can you provide the exact error message, as well as the version of > PostgreSQL you're using and any relevant OS version details. > > Also, it sounds like PostgreSQL might be dumping core. If that's the > case, providing a backtrace from the core file (using gdb) would be > helpful. It would be especially helpful if you could recompile > PostgreSQL with debugging symbols (./configure --enable-debug) and get a > backtrace after that. > > Cheers, > > Neil > -- > Neil Conway <neilc@samurai.com> || PGP Key ID: DB3C29FC > > >
On Fri, 2003-02-21 at 10:46, Henrik Steffen wrote: > sorry, I didn't save nor log the exact error message. I can't see a way to help you, in that case. If you do find some means to reproduce the error or get a backtrace, please let us know. Cheers, Neil -- Neil Conway <neilc@samurai.com> || PGP Key ID: DB3C29FC
On Fri, 2003-02-28 at 17:23, Francisco J Reyes wrote: > Coming late to the thread.. > Does compiling with --enable-debug causes any significant performance > impact? I don't think so -- there will be a significantly larger on-disk footprint for the PostgreSQL executables, though. Cheers, Neil -- Neil Conway <neilc@samurai.com> || PGP Key ID: DB3C29FC
On 21 Feb 2003, Neil Conway wrote: > Also, it sounds like PostgreSQL might be dumping core. If that's the > case, providing a backtrace from the core file (using gdb) would be > helpful. It would be especially helpful if you could recompile > PostgreSQL with debugging symbols (./configure --enable-debug) and get a > backtrace after that. Coming late to the thread.. Does compiling with --enable-debug causes any significant performance impact?
Francisco J Reyes <fran@natserv.net> writes:
> Does compiling with --enable-debug causes any significant performance
> impact?
If you're using gcc it's claimed to make no difference whatever.
On other compilers, --enable-debug often turns off optimization.
regards, tom lane