sub create_db_install_val(){
$File_name="$HOME/DB_INSTALL_VALIDATION.sh";
print "\n Shell name to validate DB Installation Completion is $File_name\n";
open (FILE,">$File_name") or die "cannot open $File_name file";
print FILE "#!/bin/sh\n";
print FILE "FILE=\"/scratch/pratranj/DB_11.2.0.1.0/config/setup.log\"\n";
print FILE "STRING=\"Completed creating database instance\"\n";
print FILE "EXIT=1\n";
print FILE "while : ;do\n";
print FILE "    [[ -f \"$FILE\" ]] && grep -q \"$STRING\" \"$FILE\" && echo \"DB Installation is completed\" && break\n";
print FILE "sleep 5\n";
print FILE "done\n";
close(FILE);
}

##</code><code>##

#!/bin/sh
FILE="/scratch/pratranj/DB_11.2.0.1.0/config/setup.log"
STRING="Completed creating database instance"
EXIT=1
while : ;do
    [[ -f '""' ]] && grep -q "" "" && echo "DB Installation is completed" && break
sleep 5
done