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Top Forums UNIX for Advanced & Expert Users Oracle how many memory allocate really Post 302443237 by methyl on Saturday 7th of August 2010 05:31:47 PM
Old 08-07-2010
Let's tie this down a bit.

What Operating System and version do you have?
What version of Oracle are you using?

Because Oracle makes extensive use of Shared Memory segments and most modern versions of unix use paged memory it is remarkably difficult to find out how much memory Oracle is using. The Oracle installation manuals are very good on the subject of configuring unix and Oracle for a given memory size. It is very important to know your Oracle Database Block Size because many Oracle startup parameters are in units of Blocks.

You can find out a lot from Oracle itself.

For example to find out about the System Global Area with sqlplus:
Code:
select *  from v$sgastat;

 

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Convert::NLS_DATE_FORMAT(3pm)				User Contributed Perl Documentation			     Convert::NLS_DATE_FORMAT(3pm)

NAME
Convert::NLS_DATE_FORMAT - Convert Oracle NLS_DATE_FORMAT <-> strftime Format Strings SYNOPSIS
use Convert::NLS_DATE_FORMAT qw(oracle2posix posix2oracle); my $strptime = oracle2posix($NLS_DATE_FORMAT); $NLS_DATE_FORMAT = posix2oracle($strftime); DESCRIPTION
Convert Oracle's NLS_DATE_FORMAT string into a strptime format string, or the reverse. Functions oracle2posix Takes an Oracle NLS_DATE_FORMAT string and converts it into formatting string compatible with "strftime" or "strptime". my $format = oracle2posix('YYYY-MM-DD HH24:MI:SS'); # '%Y-%m-%d %H:%M:%S' Character sequences that should not be translated may be enclosed within double quotes, as specified in the Oracle documentation. my $format = oracle2posix('YYYY-MM-DD"T"HH24:MI:SS'); # '%Y-%m-%dT%H:%M:%S' posix2oracle Takes a "strftime" or "strptime" formatting string and converts it into an Oracle NLS_DATE_FORMAT string. It is possible to create strings which Oracle will not accept as valid NLS_DATE_FORMAT strings. my $format = posix2oracle('%Y-%m-%d %H:%M:%S'); # 'YYYY-MM-DD HH24:MI:SS' EXPORT None by default. "oracle2posix" and "posix2oracle" when asked. SEE ALSO
DateTime::Format::Oracle. AUTHOR
Nathan Gray, <kolibrie@cpan.org> COPYRIGHT AND LICENSE
Copyright (C) 2005, 2006, 2011, 2012 Nathan Gray This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.4 or, at your option, any later version of Perl 5 you may have available. perl v5.14.2 2012-01-18 Convert::NLS_DATE_FORMAT(3pm)
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