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Full Discussion: grep'ing a variable - why not working
Top Forums UNIX for Dummies Questions & Answers grep'ing a variable - why not working Post 302577881 by methyl on Wednesday 30th of November 2011 07:31:53 AM
Old 11-30-2011
Please post what Operating System and version you have, the Shell (e.g. bash, ksh, sh etc.).

In most Shells $PPID is the PID of the process which invoked the current Shell. In bash Shell this environment variable is write protected.

Oracle needs substantial unix kernel tuning. The kernel parameter "maximum number of files open by any one user" is as important as "maximum number of files open on the system" and "maximum number of files locked on the system".
There are detailed kernel tuning guides from Oracle for each O/S, but there will still be more tuning depending on the application.

Getting "defunct" processes from an Oracle client-server application is nothing unusal and the Operating System should clear them up within an hour or so. They are commonly caused by people clicking "X" in a Windows client instead of doing a proper application logout. If they persist for longer this can be because of an application error or because they are stuck when accessing broken hardware.
Depending on your circumstances you may need to tune the unix kernel to allow for as many as double the Oracle clients you actually expect ... or more.
 

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LEARN ABOUT DEBIAN

apache::session::oracle

Apache::Session::Oracle(3pm)				User Contributed Perl Documentation			      Apache::Session::Oracle(3pm)

NAME

       Apache::Session::Oracle - An implementation of Apache::Session

SYNOPSIS

	use Apache::Session::Oracle;

	#if you want Apache::Session to open new DB handles:

	tie %hash, 'Apache::Session::Oracle', $id, {
	   DataSource => 'dbi:Oracle:sessions',
	   UserName   => $db_user,
	   Password   => $db_pass,
	   Commit     => 1
	};

	#or, if your handles are already opened:

	tie %hash, 'Apache::Session::Oracle', $id, {
	   Handle => $dbh,
	   Commit => 1
	};

DESCRIPTION

       This module is an implementation of Apache::Session.  It uses the Oracle backing store and no locking.  See the example, and the
       documentation for Apache::Session::Store::Oracle for more details.

USAGE

       The special Apache::Session argument for this module is Commit.	You MUST provide the Commit argument, which instructs this module to
       either commit the transaction when it is finished, or to simply do nothing.  This feature is provided so that this module will not have
       adverse interactions with your local transaction policy, nor your local database handle caching policy.	The argument is mandatory in order
       to make you think about this problem.

       This module also respects the LongReadLen argument, which specifies the maximum size of the session object.  If not specified, the default
       maximum is 8 KB.

AUTHOR

       This module was written by Jeffrey William Baker <jwbaker@acm.org>.

SEE ALSO

       Apache::Session::File, Apache::Session::Flex, Apache::Session::DB_File, Apache::Session::Postgres, Apache::Session

perl v5.10.1							    2010-10-18					      Apache::Session::Oracle(3pm)
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