Today I needed to use Groovy to create a dump of all MySQL databases on the MySQL server running on my local machine.

So I looked at my earlier blog entry on how to dump MySQL databases using the "mysqldump" command.

So when I issued the command create a dump from console, the contents of the database are dumped to a sql file as expected.

// Works in command line
mysqldump --all-databases -u [username] -p[password] -C > alldatabases.sql

As you might know, it is fairly straight-forward to execute shell commands from Groovy. You simply put the command in quotes and call the execute() method.

However, when I issued the same command using Groovy, the command did not work... well, at least not at first.

Read more...

This is another one of those "lest I forget" type of blog entries. There are times one has to migrate all MySQL databases to another box (like now when I have to give my Mac for repair and I have to work in a Windows machine!) This is the command to backup all MySQL databases

mysqldump --all-databases -u [username] -p -C > alldatabases.sql

Replace [username] with the name of the MySQL user. I used "root" as it has access to all databases. This will create a file called "alldatabases.sql" containing all the SQL commands for creating the databases and inserting data into them. To restore from this SQL file, use this command

mysql -h localhost -u [username] -p < alldatabases.sql

Now, I won't have to rummage through the big wild web for this!

Of late I've had to use Apache Derby in my work.

SQuirrel SQL is a great, Java-based client for connecting to any JDBC compliant database. I recently did a couple of screencasts (at my place of work) on installing and setting up SQuirrel SQL to work with Derby.

Here are the links to the screencasts: Installing SQuirrel SQL Client for Apache Derby Set up SQuirrel SQL for Apache Derby Database