Dynamic Buffer Cache

[Amiel Tutolo]

I have a question that I should know the answer to but I have heard too many differing responses. Please help clarify the following:
If the bufpages is set to anything other than 0 then the MAX and MIN DBC are not used regardless of their setting. Thanks for all your help.

[Pete Randall · Accepted solution]

You're correct: if nbuf and bufpages are set, DBC is not used.


Pete

[Brian Bergstrand]

That's correct. Setting bufpages, creates a static buffer cache. The dynamic cache settings are ignored.

HTH.

[James R. Ferguson]

Hi:

That is true. To enable a dynamic buffer cache as governed (bounded) by 'dbc_min_pct' and 'dbc_max_pct', you must set both 'nbuf' and 'bufpages' to zero.

For more information, see:

http://docs.hp.com/hpux/onlinedocs/939/KCParms/KCparam.BufPages.html

Regards!

...JRF...

[Helen French]

Clarification from here:

http://www.docs.hp.com/cgi-bin/otsearch/getfile?id=/hpux/onlinedocs/939/KCParms/KCparam.DBCmaxPct.html&searchterms=dbc_max_pct&queryid=20030807-132934