All Oracle Error Codes
Oracle DBA Forum

Frequent Oracle Errors

TNS:could not resolve the connect identifier specified
Backtrace message unwound by exceptions
invalid identifier
PL/SQL compilation error
internal error
missing expression
table or view does not exist
end-of-file on communication channel
TNS:listener unknown in connect descriptor
insufficient privileges
PL/SQL: numeric or value error string
TNS:protocol adapter error
ORACLE not available
target host or object does not exist
invalid number
unable to allocate string bytes of shared memory
resource busy and acquire with NOWAIT specified
error occurred at recursive SQL level string
ORACLE initialization or shutdown in progress
archiver error. Connect internal only, until freed
snapshot too old
unable to extend temp segment by string in tablespace
Credential retrieval failed
missing or invalid option
invalid username/password; logon denied
unable to create INITIAL extent for segment
out of process memory when trying to allocate string bytes
shared memory realm does not exist
cannot insert NULL
TNS:unable to connect to destination
remote database not found ora-02019
exception encountered: core dump
inconsistent datatypes
no data found
TNS:operation timed out
PL/SQL: could not find program
existing state of packages has been discarded
maximum number of processes exceeded
error signaled in parallel query server
ORACLE instance terminated. Disconnection forced
TNS:packet writer failure
see ORA-12699
missing right parenthesis
name is already used by an existing object
cannot identify/lock data file
invalid file operation
quoted string not properly terminated

Re: So how big is your buffer cache ?

Jared Still


comments inline:

On Sat, 2004-08-28 at 04:56, Richard Foote wrote:
> Hi All,
> In an interesting insight into how Don Burleson performs tuning at the
> c.d.o.s newsgroup
> (http://groups.google.com/groups?dq=&hl=en&lr=&ie=UTF-8&th=73f606eef5e7e99f)
> . Don suggests he has "no problem throwing hardware at crappy code when the
> client doesn't want to tune it". He's also basically recommending using AWE
> and utilising all available RAM on 32bit windows, whether you need to or
> not. I mean, AWE has no disadvantages right ... :)


We are all free to disagree in this forum, but...

> However, he also makes the claim that "It's not uncommon to see working sets
> of frequently-referenced data of for than 30-gig for a large database. AWE
> is a great techniques for 32-bit Windows databases and I do it for dozens
> of databases every year, ALWAYS with great results."
> So my question to you all is how large are your largest buffer caches ? How
> many of you have a buffer cache that is 30G+ ? And on 32bit windows ?

It would appear that you are putting words in Don's mouth. I read the
CDOS thread, or at least parts of it, and I don't see where Don is
advocating 30 GB buffer caches.

I can't even find the quote you attributed to him, but just based on
what you included, you've made the jump from his statement that it
is "not uncommon to see working sets of frequently-referenced data
of more than 30-gig" to "we created 30 gig buffer caches to hold
all frequently referenced data".

A good rule to keep in mind here:

Treat others as you would like to be treated.

You made the assertion that Don said something which in reality
does not appear to be true. Not a nice thing to do.

Something else to consider is this: it you want to engage Don or
anyone else when you disagree with them, do it in the forum where
the thread appeared.

If it appears here, fine. If not, do it in CDOS, or wherever
you read it.

It really isn't fair to bring if over here.

(list owner and babysitter)

Please see the official ORACLE-L FAQ: http://www.orafaq.com
To unsubscribe send email to: oracle-l-request@(protected)
put 'unsubscribe' in the subject line.
Archives are at http://www.freelists.org/archives/oracle-l/
FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html