I was looking for simple script for monitoring of specific events in alert log. After searching on the web (I was found some pretty scripts but most of them was very huge or complicated (IMHO)) I decided to write my own script in Bash shell. Download alert log monitor script. Script after execution checks some prerequisities, then execute tail command and post the output to trigger function which is parsing (using egrep command) the output for interesting events defined in $NEEDLE variable. If the conditions (in $NEEDLE) are met then action function is executed. In this case action emails the event message along with instance name to speciefied e-mail address (sending of emails should be configured on OS level). Of course you can write your own action. Hope you'll find this script as useful.