Re: Create a database without using DbAssist

We had an example on this list few years (already...) ago, when TOAD became a commercial tool. I remember reading some postings like "What am I going to do without TOAD?"...

Personally I like and use some GUI tools but I also like to know what really happens in case all I have is the command line. Sometimes it takes too long to load GUI...

Witold

> Oh geez... okay, you have GOT to read the manuals!!!!!!!!!!!!!
>
> check out the SQL reference guide, specifically the "Create Database"
> statement
>
> <getting on soapbox>
>
> This is why I so hate the damned GUI tools. If a DBA doesn't know how
> to perform the same functions without the tools, what happens to them
> when the tools are not there??
>
> </getting off soapbox>
>
>
> --- Gavin D'mello <gavin_d_at_tis.co.in> wrote:
> > Is it possible to create a database without using dbassist ?
> >
> > Gavin
> >
> >
> > ----- Original Message -----
> > To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> > Sent: Saturday, December 15, 2001 5:25 PM
> >
> >
> > > This is not outdated -- the Oracle queries against the data
> > dictionary
> > > tables are tuned for RULE and so analyzing the SYS tables wreaks
> > havoc
> > > in the database.
> > >
> > >
> > > --- Amar Kumar Padhi <TS2017_at_emirates.com> wrote:
> > > > My information on this may be a bit outdated. I had read it
> > somewhere
> > > > that
> > > > statistics are not to be generated for SYS tables. Oracle will
> > handle
> > > > the
> > > > dictionary information access, irrespective of the optimizer mode
> > > > being
> > > > used. The setting of the optimizer_mode should affect the
> > application
> > > > queries being generated for other schemas. So if you are using
> > CBO,
> > > > setting
> > > > the Optimizer_mode to first_rows looks more applicable than doing
> > an
> > > > alter
> > > > session every time. I am not able to comment on the poor
> > performance
> > > > when
> > > > accessing the dict.
> > > >
> > > > rgds
> > > > amar
> > > >
> > > > -----Original Message-----
> > > > Sent: Friday, December 14, 2001 11:00 PM
> > > > To: Multiple recipients of list ORACLE-L
> > > >
> > > >
> > > > FYI,
> > > >
> > > > I just logged a call with Oracle re. Designer 6.0 vs.
> > > > all_cons_columns.
> > > >
> > > > A developer noticed that whenever he queries that data dictionary
> > > > table as
> > > > part of generating database from server models, the process slows
> > > > down to a
> > > > crawl.
> > > >
> > > > If the target doesn't have any constraints, no problem.
> > > >
> > > > I am starting to wonder if it isn't because FIRST_ROWS was
> > specified
> > > > on this
> > > > database, most of the developers are developing forms (6i) so I
> > set
> > > > the
> > > > init.ora parameter accordingly.
> > > >
> > > > The Oracle documentation however implies that the CBO only
> > switches
> > > > to rule
> > > > when there are no stats if optimizer_mode had been set to CHOOSE,
> > if
> > > > it's
> > > > either ALL_ROWS or FIRST_ROWS it tries to use the CBO against the
> > > > data
> > > > dictionary anyway. How the CBO can run when there are no stats
> > > > probably
> > > > means it defaults to full table scans (?).
> > > >
> > > > OPTIMIZER_MODE = { all_rows | first_rows | rule | choose }
> > > >
> > > > The OPTIMIZER_MODE parameter specifies the approach and mode of
> > the
> > > > optimizer for your session.
> > > >
> > > >
> > > > See Also: Oracle8i Concepts <../../server.817/a76965/toc.htm>
> > and
> > > > Oracle8i
> > > > Performance Guide and Reference <../../server.817/a76992/toc.htm>
> >
> > > > for
> > > > information on how to choose a goal for the cost-based approach
> > based
> > > > on the
> > > > characteristics of your application
> > > >
> > > >
> > > >
> > > > * all_rows specifies the cost-based approach and optimizes for
> > best
> > > > throughput.
> > > > * first_rows specifies the cost-based approach and optimizes for
> > best
> > > > response time.
> > > > * rule specifies the rule-based approach. (The rule-based
> > optimizer
> > > > does not use function-based indexes.)
> > > > * choose causes the optimizer to choose an optimization approach
> > > > based
> > > > on the presence of statistics in the data dictionary.
> > > >
> > > > Is this correct? If so, then I suppose I should set the init.ora
> > > > parameter
> > > > back to optimizer_mode=choose, and tell each developer to put an
> > > > alter
> > > > session statement on their clients to alter their sessions
> > > > automatically to
> > > > first_rows. The developer using designer will then be able to
> > run it
> > > > in a
> > > > timely manner.
> > > >
> > > > Please tell me if my suspicion is correct.
> > > >
> > > > If correct, it begs the question: why are first_rows and
> > all_rows
> > > > available
> > > > for the init.ora file???
> > > >
> > > > Regards,
> > > > Patrice Boivin
> > > > Systems Analyst (Oracle Certified DBA)
> > > >
> > > > --
> > > > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > > > --
> > > > Author: Boivin, Patrice J
> > > > INET: BoivinP_at_mar.dfo-mpo.gc.ca
> > > >
> > > > Fat City Network Services -- (858) 538-5051 FAX: (858)
> > 538-5051
> > > > San Diego, California -- Public Internet access / Mailing
> > > > Lists
> > > >
> > --------------------------------------------------------------------
> > > > To REMOVE yourself from this mailing list, send an E-Mail message
> > > > to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and
> > in
> > > > the message BODY, include a line containing: UNSUB ORACLE-L
> > > > (or the name of mailing list you want to be removed from). You
> > may
> > > > also send the HELP command for other information (like
> > subscribing).
> > > >
> > >
> > >
> > > __________________________________________________
> > > Do You Yahoo!?
> > > Check out Yahoo! Shopping and Yahoo! Auctions for all of
> > > your unique holiday gifts! Buy at http://shopping.yahoo.com
> > > or bid at http://auctions.yahoo.com
> > > --
> > > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > > --
> > > Author: Rachel Carmichael
> > > INET: wisernet100_at_yahoo.com
> > >
> > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> > > San Diego, California -- Public Internet access / Mailing
> > Lists
> > >
> > --------------------------------------------------------------------
> > > To REMOVE yourself from this mailing list, send an E-Mail message
> > > to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> > > the message BODY, include a line containing: UNSUB ORACLE-L
> > > (or the name of mailing list you want to be removed from). You may
> > > also send the HELP command for other information (like
> > subscribing).
> >
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > --
> > Author: Gavin D'mello
> > INET: gavin_d_at_tis.co.in
> >
> > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> > San Diego, California -- Public Internet access / Mailing
> > Lists
> > --------------------------------------------------------------------
> > To REMOVE yourself from this mailing list, send an E-Mail message
> > to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> > the message BODY, include a line containing: UNSUB ORACLE-L
> > (or the name of mailing list you want to be removed from). You may
> > also send the HELP command for other information (like subscribing).
>
>
> __________________________________________________
> Do You Yahoo!?
> Check out Yahoo! Shopping and Yahoo! Auctions for all of
> your unique holiday gifts! Buy at http://shopping.yahoo.com
> or bid at http://auctions.yahoo.com
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Rachel Carmichael
> INET: wisernet100_at_yahoo.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Witold Iwaniec
  INET: wiwaniec_at_novalistech.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).