[root@prithvi bin]# perl tmp.pl
DBI connect('hostname=localhost;port=1527;url=jdbc:derby:mydb%3BsecurityMechanism%3D8','myuser',...) failed: I/O Error  001bd00200010015124c0006114900080006000c00000005114a03 at tmp.pl line 9
Derby system tables
--------------------------
Can't call method "prepare" on an undefined value at tmp.pl line 12.
[root@prithvi bin]#
[root@prithvi bin]#
[root@prithvi bin]# cat tmp.pl
use DBD::JDBC;

$url = "jdbc:derby:mydb;securityMechanism=8";
## Since space, ';' and '=' is used in DBD dsn,
## we need to encode them in the url:
$url =~ s/([=;])/uc sprintf("%%%02x",ord($1))/eg;
$dsn = "dbi:JDBC:hostname=localhost;port=1527;url=$url";

$dbh = DBI->connect($dsn, "myuser", "mypassword");

print "Derby system tables\n--------------------------\n";
$sth = $dbh->prepare("select tablename from SYS.SYSTABLES");
$sth->execute();
while (my ($i) = $sth->fetchrow_array) {
    print "Found: $i\n";
}


[root@prithvi bin]#
[root@prithvi bin]# /opt/Java/jdk1.6.0_21/db/bin/ij
ij version 10.5
ij> connect 'jdbc:derby://localhost:1527/mydb;securityMechanism=8;user=myuser;password=mypassword';
ij>