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Top Forums Shell Programming and Scripting Running Oracle SqlPlus with Java in Kshells Post 302311045 by bobk544 on Monday 27th of April 2009 05:59:18 PM
Old 04-27-2009
Running Oracle SqlPlus with Java in Kshells

Hello,

This may not be the right place to ask for help for this problem but i might be because i'm using Java & SqlPlus in alot of Kshell scripts.

Just to give a high level picture, i'm basically using Java to control each SqlPlus execute command, by reading a flat file that contains the run values from previous steps and then in lets say the current step, check the values from previous steps to see for example if step3 = step1 + step2 ect.

The Java program will compare the previous step rules and then execute the SqlPlus, query to output from the SqlPlus and make a new Java entry.

But what is happening is in the Oracle Session Log it is creating and not deleting 10s upon 10s of seession entries and when i look at some of them they say they are Java executables.

So do you think this is a Java problem and if so is there a way to somehow delete the session immediately after the step runs so that the session thread disappears?

Thanks for any insights and even quesses at this point!

Fyi it's really only a problem now that system has been moved to a very heavily used instance and now everyone is seeing alot more sessions being created other than their own and not sure why the system is grinding to a halt.
 

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jstack(1)						      General Commands Manual							 jstack(1)

NAME
jstack - stack trace SYNOPSIS
jstack [ option ] pid jstack [ option ] executable core jstack [ option ] [server-id@]remote-hostname-or-IP DESCRIPTION
jstack prints Java stack traces of Java threads for a given Java process or core file or a remote debug server. For each Java frame, the full class name, method name, 'bci' (byte code index) and line number, if available, are printed. With the -m option, jstack prints both Java and native frames of all threads along with the 'pc' (program counter). For each native frame, the closest native symbol to 'pc', if available, is printed. C++ mangled names are not demangled. To demangle C++ names, the output of this command may be piped to c++filt. NOTE - This utility is unsupported and may or may not be available in future versions of the J2SE SDK. jstack is not currently available on Windows platforms or on the Linux Itanium platform. PARAMETERS
Options are mutually exclusive. Option, if used, should follow immediately after the command name. pid process id for which the stacktrace is to be printed. The process must be a Java process. To get a list of Java processes running on a machine, jps may be used. executable Java executable from which the core dump was produced. core core file for which the stack trace is to be printed. remote-hostname-or-IP remote debug server's (see jsadebugd) hostname or IP address. server-id optional unique id, if multiple debug servers are running on the same remote host. OPTIONS
-m prints mixed mode (both Java and native C/C++ frames) stack trace. -h Prints a help message. -help Prints a help message. SEE ALSO
pstack(1) c++filt(1) jps(1) jsadebugd(1) KNOWN BUGS
Mixed mode stack trace, the -m option, does not work with the remote debug server. 13 June 2004 jstack(1)
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