Perl操作Oracle

一、 perl连接Oracle数据库

[plain]view plaincopy

1. [oracle@oracle11gR2 perl_script]$ more connect.pl
2. #!/usr/bin/perl
3. #perl script used to connect to Oracle
4. use strict;
5. use DBI;
6. my $tnsname="ora11gR2";
7. my $username="scott";
8. my $password="tiger";
9. my $dbh=DBI->connect("dbi:Oracle:$tnsname", $username, $password) or die "Cannot conenct db: $DBI::errstr\n";
10. print "I have connected to the Oracle database!\n";
11. $dbh->disconnect or warn "DB disconnect failed: $DBI::errstr\n";
12. print "Disconnected from Oracle databae!\n";
13. [oracle@oracle11gR2 perl_script]$ ./connect.pl
14. I have connected to the Oracle database!
15. Disconnected from Oracle databae!

二、向数据库插入数据

[plain]view plaincopy

1. [oracle@oracle11gR2 perl_script]$ more insert.pl
2. #!/usr/bin/perl
3. # this code is used to insert data to Oracle Database
4. use strict;
5. use DBI;
6. my $id = 2;
7. my $name = "denver";
8. my $dbh = DBI->connect("dbi:Oracle:ora11gR2", "test","test") or die " Cannot connect db: $DBI::errstr\n";
9. my $sql = qq{INSERT INTO m VALUES(?,?)};
10. my $sth = $dbh->prepare($sql);
11. $sth->execute($id, $name);
12. print "I have inserted the record!\n";
13. $dbh->disconnect or warn "DB disconnect failed: $DBI::errstr\n";
14. [oracle@oracle11gR2 perl_script]$ ./insert.pl
15. I have inserted the record!
16. [oracle@oracle11gR2 perl_script]$

三、删除数据

[plain]view plaincopy

1. [oracle@oracle11gR2 perl_script]$ more delete.pl
2. #!/usr/bin/perl
3. # Delete Data From Oracle Database
4. use strict;
5. use DBI;
6. my $id=2;
7. my $dbh = DBI->connect("dbi:Oracle:ora11gR2", "test", "test") or die "Cannot connect db: $DBI::errstr\n";
8. my $sql = qq{DELETE FROM m WHERE id=$id};
9. my $sth = $dbh->prepare($sql);
10. $sth->execute();
11. print "I have deleted the record!\n";
12. $dbh->disconnect or warn "DB disconnect failed:$DBI::errstr\n";
13. [oracle@oracle11gR2 perl_script]$ ./delete.pl
14. I have deleted the record!

四、查询

[plain]view plaincopy

1. [oracle@oracle11gR2 perl_script]$ more select.pl
2. #!/usr/bin/perl
3. # Here is an example code piece to select data from Oracle
4. use strict;
5. use DBI;
6. my $host = "localhost";
7. my $sid = "denver";
8. my $dbh = DBI->connect("dbi:Oracle:ora11gR2", "test", "test") or die "Cannot connect db:$DBI::errstr\n";
9. print "I have connected to the Oracle 11g R2 database!\n";
10. my $sql = qq{SELECT id, name FROM m};
11. my $sth = $dbh->prepare($sql);
12. $sth->execute();
13. my ($pid, $pname); #declare columns
14. $sth->bind_columns(undef, \$pid, \$pname);
15. print "The results are:\n\n";
16. while ( $sth->fetch() ) { #fetch rows from DataBase
17. print "ID:$pid, --- NAME:$pname\n";
18. }
19. $sth->finish();
20. $dbh->disconnect or warn "DB disconnect failed: $DBI::errstr\n";
21. [oracle@oracle11gR2 perl_script]$ ./select.pl
22. I have connected to the Oracle 11g R2 database!
23. The results are:
24. ID:0, --- NAME:**e
25. ID:1, --- NAME:**e
26. [oracle@oracle11gR2 perl_script]$