Hi Tom Thanks for the quick response and useful information, having looked at the current postgresql.conf file the locale settings are as follow # These settings are initialized by initdb, but they can be changed. lc_messages = 'en_US.UTF-8' # locale for system error message # strings lc_monetary = 'en_US.UTF-8' # locale for monetary formatting lc_numeric = 'en_US.UTF-8' # locale for number formatting lc_time = 'en_US.UTF-8' # locale for time formatting How can I go about changing these to the C locale, would a simple change in postgresql.conf be o.k I have read that an initdb might be required ? The postgres install is currently in use any hints on the best way to go about doing this making sure all my other settings are maintained ? Thanks again for your help in this matter Fran -----Original Message----- From: Tom Lane [mailto:tgl@xxxxxxxxxxxxx] Sent: 27 July 2009 15:00 To: Thorne, Francis Cc: pgsql-admin@xxxxxxxxxxxxxx Subject: Re: Slow adding Large Indexes "Thorne, Francis" <thornef@xxxxxxxxxxxxxx> writes: > The problem I have is that it takes around 15 mins to insert the data > into the table which is a massive improvement from the old server but it > then takes 40 mins to create two indexes one 1GB index and another that > is a 2GB index this is considerably slower than on the older server. If these are indexes on textual data, maybe you accidentally changed from C locale to some other locale. All the other ones are slower to compare text strings, sometimes massively so. regards, tom lane ___________________________________________________ This email is intended for the named recipient. The information contained in it is confidential. You should not copy it for any purposes, nor disclose its contents to any other party. If you received this email in error, please notify the sender immediately via email, and delete it from your computer. Any views or opinions presented are solely those of the author and do not necessarily represent those of the company. Cromwell Tools Limited, PO Box 14, 65 Chartwell Drive Wigston, Leicester LE18 1AT. Tel 0116 2888000 Registered in England and Wales, Reg No 00986161 VAT GB 115 5713 87 900 __________________________________________________ -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin