08-05-2008
If the performance is unexplainably bad it might be a monitoring software problem: i remember from the last project i worked at that there was a problem with the CA-Unicenter Oracle agent. There were combinations of Oracle patch levels and revisions of this agent which worked and most others caused severe performance problems as the agent hogged as many system resources as it could get over a few days. (Taking up several GB of memory for basically nothing was not unusual.)
Still this would be showing in vmstat and this is not the case. In fact yor machine looks pretty good there: the "fre" column is quite high (this is the memory which is outright available, in 4K-pages), the blocked-queue (b) is constantly zero and the "ec" column shows low values (this is the "entitled capacity consumed", the percentage of available processing resources which are really used - if it goes near 100 this indicates that the processor(s) are too small/few for the load).
Here is some literature i found when i was working on a performance optimization project involving Oracle on AIX 5.3:
http://publib16.boulder.ibm.com/pser...d/prftungd.pdf
http://www.redbooks.ibm.com/redbooks/pdfs/sg246478.pdf
http://www.redbooks.ibm.com/redbooks/pdfs/sg244810.pdf
System Performance Tuning, O'Reilly, 1990, ISBN 0-937175-60-9
Tuning for Oracle9i on AIX
AIX 5L Initial Tuning
I hope this helps.
bakunin
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LEARN ABOUT SUSE
uri::url
URI::URL(3) User Contributed Perl Documentation URI::URL(3)
NAME
URI::URL - Uniform Resource Locators
SYNOPSIS
$u1 = URI::URL->new($str, $base);
$u2 = $u1->abs;
DESCRIPTION
This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to
be distributed with the libwww-perl library.
The following differences exist compared to the "URI" class interface:
o The URI::URL module exports the url() function as an alternate constructor interface.
o The constructor takes an optional $base argument. The "URI::URL" class is a subclass of "URI::WithBase".
o The URI::URL->newlocal class method is the same as URI::file->new_abs.
o URI::URL::strict(1)
o $url->print_on method
o $url->crack method
o $url->full_path: same as ($uri->abs_path || "/")
o $url->netloc: same as $uri->authority
o $url->epath, $url->equery: same as $uri->path, $uri->query
o $url->path and $url->query pass unescaped strings.
o $url->path_components: same as $uri->path_segments (if you don't consider path segment parameters)
o $url->params and $url->eparams methods
o $url->base method. See URI::WithBase.
o $url->abs and $url->rel have an optional $base argument. See URI::WithBase.
o $url->frag: same as $uri->fragment
o $url->keywords: same as $uri->query_keywords
o $url->localpath and friends map to $uri->file.
o $url->address and $url->encoded822addr: same as $uri->to for mailto URI
o $url->groupart method for news URI
o $url->article: same as $uri->message
SEE ALSO
URI, URI::WithBase
COPYRIGHT
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