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Oracle Tips by Burleson 

Web Server Alert Report

In a production Web environment, it is often useful to alert the staff whenever an Oracle-related program aborts. This script is generally executed via a cron every five minutes, and this code can be extended to locate core or trace file in any UNIX file location. IN this example, the webserver_alert.ksh script can be customized to search the dump file location for any Pro*C, C++, or perl programs. This script requires the following modifications:

* Change the e-mail addresses to match the people who want to be notified of program dumps.
* Change /usr/src/asp/core to the name and location of core files on your Web server.

This is a simple but quite important script. It searches for a core file and instantly e-mails it to alert the staff about a production abort.

webserver_alert.ksh
#!/bin/ksh

MYDATE=`date +"%Y%m%d"`

SERVER=`uname -a|awk '{print $2}'`

if [ -f /usr/src/asp/core ]
then

# Move the file to a dated location . . .
mv /usr/src/asp/core /tmp/core_$MYDATE

# send an e-mail to the administrator
head /tmp/core_$MYDATE|\
mail -s "EMERGENCY - WebServer $SERVER abort in /tmp/core_$MYDATE"\
don@burleson.cc\
omar@oracle.com\
carlos@oracle.com

fi


As we see, this type of script instantly alerts Oracle developers of the presence of trace file, and e-mails them the information that they need to solve the production problem. Next, let’s look at a real-time alert script that can warn the DBA about impending problems in the Oracle environment.


The above is an excerpt from the "Oracle9i UNIX Administration Handbook" by Oracle press, authored by Donald K. Burleson.

 

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