web analytics

Oracle: read the entries from alert log

Sometimes it’s necessary to read the information from the alert log together with the timestamp of the error.

The very simple Unix-shell script helps to do this:

echo 'Enter # of lines:'
read NUM
tail -$NUM alert_${ORACLE_SID}.log | awk '
 BEGIN {prev="" ; ret=1 }
 /^(...-|Error)/ { if ( prev !~ /^(...-|Error)/ ) { print "" ; print prev;} print $0;ret=0}
 END { exit ret } '

This code could be assigned to some hotkey in Your favorite telnet application, so You just need to press something like “Alt+A” to see the quick review of the recent Oracle errors.


Enter # of lines:

Sep 01 19:42:03 2009
Errors in fileARC0: Archiving not possible: error count exceeded

Sep 01 19:42:06 2009
Errors in file testsrv_arc0_23486.trc:
ORA-16038: log 1 sequence# 112 cannot be archived
ORA-19502: write error on file “”, blockno (blocksize=)
ORA-00312: online log 1 thread 1: ‘redo_g1_m1.log’

Leave a Reply

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>





A sample text widget

Etiam pulvinar consectetur dolor sed malesuada. Ut convallis euismod dolor nec pretium. Nunc ut tristique massa.

Nam sodales mi vitae dolor ullamcorper et vulputate enim accumsan. Morbi orci magna, tincidunt vitae molestie nec, molestie at mi. Nulla nulla lorem, suscipit in posuere in, interdum non magna.