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Re: Index File growing big.

From: Rajesh Kumar Mallah <mallah(at)trade-india(dot)com>
To: PRAGATI SAVAIKAR <pragati(at)phildigital(dot)com>,<pgsql-performance(at)postgresql(dot)org>
Subject: Re: Index File growing big.
Date: 2003-02-26 07:29:23
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Lists: pgsql-hackerspgsql-performance
I remember this is your second posting for the same problem.

I hope you are aware that postgres can manage multiple databases that 
lie in different partitions.

If its feasible for you you may think of moving the *big* tables in another
database which can be initialised in another partition. it depends on ur app
design as you will have to create a new db connection.

another possibility is to buy a new bigger hdd ofcourse ;-)
and migrate the data.

also i think the <tableid>.1 or <tableid>.2 are extensions of the 
datafile not index files. index files have seperate id of their own.
pg_class have that id in relfilenode.

in case i am getting the problem wrong , my query is have you relocated the
index files also and created the symlinks ? (using ln -s)

Also 7.2.1 is too old an version to use in 7.2.x series 7.2.4 is latest
and in 7.3.x 7.3.2 is latest.


On Wednesday 26 February 2003 11:56 am, PRAGATI SAVAIKAR wrote:
> Hi !!
>    We have "PostgreSQL 7.2.1 on i686-pc-linux-gnu, compiled by GCC 2.96"
> installed on Linux (RedHat 7.2)
> Our database size is 15 GB.
> Since the database size was increasing and was about to cross the actual
> Hard Disk parttion Size, we moved the datafiles (also the index files) to
> another partition  and created link to them from the data directory.
> This was working fine.
> But what we found was , the index files(2 files) were not getting updated
> in the new partition, instead postgres had created another index file with
> name
> "tableID".1  in the original data directory. The size of this file was
> 356MB,
> The actual size of the data table is 1GB. and there were 2 indexes for the
> table. which were of size approximately=150MB.
> But after we created link, those 2 index files were not getting updated,
> instead the new file with ".1" extension got created in the data directory
> (old parttion) and the same is getting updated everyday.
> We dropped the table but the file with ".1" extension was not getting
> removed from data directory. We manually had to remove it.
> Can U please suggest some way to avoid the file getting created when we
> move the data file (along with the index files) to another partition.
> Thanks in Advance.
> Regards,
> Pragati.
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster



Rajesh Kumar Mallah,
Project Manager (Development)
Infocom Network Limited, New Delhi
phone: +91(11)6152172 (221) (L) ,9811255597 (M)

Visit ,
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