Re: ODP: [firebird-support] Re: Objects cached in FB memory

[m_brahi...@yahoo.fr [firebird-support]]

Because I need to know if compiled views are cached in memory a the sp

ODP: [firebird-support] Re: Objects cached in FB memory

[Karol Bieniaszewski liviusliv...@poczta.onet.pl [firebird-support]]

Hi,

I do not suppose it is possible. But why do you need that info?

regards,
Karol Bieniaszewski

[firebird-support] Re: Objects cached in FB memory

[m_brahi...@yahoo.fr [firebird-support]]

I mean through the system tables I have FB 3

[firebird-support] Objects cached in FB memory

[m_brahi...@yahoo.fr [firebird-support]]

Hi All,

Is it possible please to see by sql what is cached in FB memory some DBMS does 
it.
Thanks
 

Re: [firebird-support] index vs page size

[Nick Upson n...@telensa.com [firebird-support]]

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 | @telensa 
| Linkedin



From: firebird-support@yahoogroups.com  on 
behalf of Ann Harrison aharri...@ibphoenix.com [firebird-support] 

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 [firebird-support] 
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 | @telensa 
| Linkedin


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Re: [firebird-support] index vs page size

[Ann Harrison aharri...@ibphoenix.com [firebird-support]]

> On Jun 20, 2019, at 11:10 AM, Nick Upson n...@telensa.com [firebird-support] 
>  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 | @telensa | Linkedin
> 
> 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. 
> 
>