ADSM-L

Re: Tivoli's Recommended Standards

2003-05-27 11:52:40
Subject: Re: Tivoli's Recommended Standards
From: victoria.prince AT WACHOVIA DOT COM
To: ADSM-L AT VM.MARIST DOT EDU
Date: Tue, 27 May 2003 08:56:36 -0400
I should have said the max for DB and LOgs.  I got this information,
thanks..

>From  http://people.bu.edu/rbs/ADSM.QuickFacts :

Database, maximum size                                 Per APAR IC15376,
the ADSM database
                                                             should not
exceed 500 GB.
                                                             Per the TSM
5.1 Admin Guide: 530 GB.
                                                             Ref: Server
Admin Guide, topic
                                                              Increasing
the Size of the Database or
                                                              Recovery Log
topic, in Notes.
                                                             See: SHow
LVMFA, which reveals that the
                                                             max is
actually 531.2 GB. (See the
                                                             reported
"Maximum possible DB LP Table
                                                             size".)

Recovery log, maximum size                       Per APAR IC15376, the
recovery log
                                                             should not
exceed 5.5 GB (5440 MB). But
                                                             APAR IY09200
says that the maximum size
                                                             is 5420 MB;
and the max usable is 5416
                                                             MB (because of
how calculations are
                                                             performed
which store data structures in
                                                             a certain
fixed area in the first 1 MB
                                                             of each DB and
LOG volume).
                                                             Msgs: ANR2452E
and ANR2429E
                                                             Ref: Server
Admin Guide, topic
                                                              Increasing
the Size of Database or
                                                              Recovery Log
topic, in Notes.
                                                             See: SHow
LVMFA, which reveals that the
                                                             max is 5.3GB,
not 5.5. (See the reported
                                                             "Maximum
possible LOG 1 LP Table size".)
                                                             As of TSM 4.2
(June 2001), the maximum
                                                             size of the
recovery log is increased to
                                                             13 GB. (Note
that automatic expansion of
                                                             the database,
by DBBackuptrigger, will
                                                             not go beyond
12 GB.)
                                                             Advisory: It
is best to not run with a
                                                             maximum value
because you may run into
                                                             the very ugly
ANR7837S situation where
                                                             your Recovery
Log is full and, being at
                                                             the maximum,
you can't add space to get
                                                             your server
restarted.  And consider
                                                             running in
Normal rather than
                                                             Rollforward
mode: many customers are
                                                             doing that to
avoid log filling
                                                             problems.



Respectfully,
Victoria

"Make Peace with Imperfection"

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