Making Life Simple » Uncategorized http://www.lalitmehta.com/home Thu, 19 Jan 2012 09:13:52 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 SVNAnt does not work http://www.lalitmehta.com/home/2009/09/03/svnant-does-not-work/?utm_source=rss&utm_medium=rss&utm_campaign=svnant-does-not-work http://www.lalitmehta.com/home/2009/09/03/svnant-does-not-work/#comments Thu, 03 Sep 2009 17:33:16 +0000 lalit http://www.lalitmehta.com/home/?p=112 If using SVNAnt, make sure subversion is installed on the system.

In case, there is a way to use SVNAnt without it please let me know.

]]> http://www.lalitmehta.com/home/2009/09/03/svnant-does-not-work/feed/ 0 Invoke a servlet from a servlet http://www.lalitmehta.com/home/2009/09/03/invoke-a-servlet-from-a-servlet/?utm_source=rss&utm_medium=rss&utm_campaign=invoke-a-servlet-from-a-servlet http://www.lalitmehta.com/home/2009/09/03/invoke-a-servlet-from-a-servlet/#comments Thu, 03 Sep 2009 12:33:43 +0000 lalit http://www.lalitmehta.com/home/?p=115 There are couple of ways to do so:

  1. Send a HTTP request
    To invoke a servlet that requires authentication, in addition to creating the URL object, you need to pass authentication cookies too.

    URL url = new URL("http://blah");
    URLConnection con = url.openConnection();
    con.setRequestProperty("Cookie", request.getHeader("Cookie"));
    con.connect();
  2. RequestDispatcher
  3. Send a redirect
]]> http://www.lalitmehta.com/home/2009/09/03/invoke-a-servlet-from-a-servlet/feed/ 0 GMail down http://www.lalitmehta.com/home/2009/09/01/gmail-down/?utm_source=rss&utm_medium=rss&utm_campaign=gmail-down http://www.lalitmehta.com/home/2009/09/01/gmail-down/#comments Tue, 01 Sep 2009 20:38:10 +0000 lalit http://www.lalitmehta.com/home/?p=103 It has been more than an hour or so, I am unable to access gmail. I get the following error.

google-error

I wonder what made this happen!

Update: Found the problem what caused this mess on gmail’s blog

]]> http://www.lalitmehta.com/home/2009/09/01/gmail-down/feed/ 0 MySQL database backup and restore http://www.lalitmehta.com/home/2009/07/14/mysql-database-backup-and-restore/?utm_source=rss&utm_medium=rss&utm_campaign=mysql-database-backup-and-restore http://www.lalitmehta.com/home/2009/07/14/mysql-database-backup-and-restore/#comments Tue, 14 Jul 2009 16:52:58 +0000 lalit http://www.lalitmehta.com/home/?p=96 1. Create Database Backup:
You can use mysqldump to create a simple backup of your database using the following syntax.

mysqldump -u [username] -p [password] [databasename] > [backupfile.sql]

  • [username] – this is your database username
  • [password] – this is the password for your database
  • [databasename] – the name of your database
  • [backupfile.sql] – the file to which the backup should be written.

You can also ask mysqldump to add a drop table command before every create command by using the option –add-drop-table. This option is useful if you would like to create a backup file which can rewrite an existing database without having to delete the older database manually first.
mysqldump --add-drop-table -u [username] -p [password] [databasename] > [backupfile.sql]

If you want to back up certain tables
mysqldump -u [username] -p [password] [databasename] [table1] [tableN]> [backupfile.sql]

If you want to back up multiple databases
mysqldump -u [username] -p [password] [databasename1] [databasenameN] > [backupfile.sql]

Or want to back up all databases
mysqldump -u [username] -p [password] --databases-all > [backupfile.sql]

2. Restore from database backup

Restore a particular database
mysql -u [username] -p [password] [database_to_restore] < [backupfile]

Restore all databases
mysql -u [username] -p [password] < [backupfile]

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