Thank you
Kind Regards, Nick Nick Upson | Principal Operations Engineer office +44 01799 588800 support hotline +44 1799 399200 DDI +44 01799 588621 telensa.com<http://www.telensa.com/> | @telensa<http://www.twitter.com/telensa> | Linkedin<http://www.linkedin.com/company/telensa> ________________________________ From: firebird-support@yahoogroups.com <firebird-support@yahoogroups.com> on behalf of Ann Harrison aharri...@ibphoenix.com [firebird-support] <firebird-support@yahoogroups.com> Sent: 21 June 2019 12:31 To: firebird-support@yahoogroups.com Subject: Re: [firebird-support] index vs page size On Jun 20, 2019, at 11:10 AM, Nick Upson n...@telensa.com<mailto:n...@telensa.com> [firebird-support] <firebird-support@yahoogroups.com<mailto:firebird-support@yahoogroups.com>> wrote: Hi I have a large 100Gb+ firebird 2.5 database and I'm trying to deal with some performance issues. One indicator I have found is that several large tables have indexes with a depth of 3 (and one of 4). The guidance I have seen says to increase the page size until the depth is below 3 but the pagesize is already maxed out at 16k. Can anyone suggest other actions I could take. The guidance should have been three or less, not less than three. One index with four levels should not be a crisis if you have adequate page cache. Good luck, Ann Kind Regards, Nick Nick Upson | Principal Operations Engineer office +44 01799 588800 support hotline +44 1799 399200 DDI +44 01799 588621 telensa.com<http://www.telensa.com/> | @telensa<http://www.twitter.com/telensa> | Linkedin<http://www.linkedin.com/company/telensa> IMPORTANT NOTICE: This e-mail message is intended to be received only by persons entitled to receive the confidential information it may contain. E-mail messages to clients of Telensa may contain information that is confidential and legally privileged. Please do not read, copy, forward, or store this message unless you are an intended recipient of it. If you have received this message in error, please forward it to the sender and delete it completely from your computer system. CAUTION. This email originated from outside of Telensa. Do not click links or open attachments unless you recognise the sender and know the content is safe. IMPORTANT NOTICE: This e-mail message is intended to be received only by persons entitled to receive the confidential information it may contain. E-mail messages to clients of Telensa may contain information that is confidential and legally privileged. Please do not read, copy, forward, or store this message unless you are an intended recipient of it. If you have received this message in error, please forward it to the sender and delete it completely from your computer system.
