We have a new feature as part of the 6.5 release. There is a new class that you can use to restrict access to specific connection strings that you want to use in all the connections in applications that use MySQL databases.

The following example shows how you can use the MySQLClientPermission class to restrict access to a specific server name and a database, while allowing any value for the User Id and Password within the connection string:

MySqlClientPermission permission = new MySqlClientPermission(PermissionState.None);

permission.Add("server=localhost;database=test;", " user id=; password=;",

KeyRestrictionBehavior.AllowOnly);

permission.PermitOnly();

MySqlConnection myconn = new MySqlConnection();

myconn.ConnectionString = "server=localhost; user id=QueryUser; database=test;";

myconn.Open();  // Attempt to use the connection string

The first line of …

The release of the new 6.5 Connector/Net version includes a MySqlClientPermission class to help all the users define the security polices to use in the database connections within any application using a MySQL database.

 Intellisense Support in Visual Studio

One of the cool features coming in Connector/NET 6.5 is the support in Visual Studio 2010 of Intellisense for MySql files.

As you probably know, the capability of editing mysql files (in the way of both .mysql raw files included in the solution and stored procedures/functions from Server Explorer) has been around for a while, yet a missing piece of the puzzle was to have advanced completion of sql statements in those files… until now.

Let’s explore the set of features currently implemented as part of Intellisense support.

Note: For completion intellisense features to work a database connection must be properly configured, see images below

One of the cool features coming in Connector/NET 6.5 is the support in Visual Studio 2010 of Intellisense for MySql files.

As you probably know, the capability of editing mysql files (in the way of both .mysql raw files included in the solution and stored procedures/functions from Server Explorer) has been around for a while, yet a missing piece of the puzzle was to have advanced completion of sql statements in those files… until now.

Since the release of the 5.6 Community MySQL Server there is support for the milliseconds value in Time, TimeStamp and DateTime types.  You can find more information on this new feature at (http://dev.mysql.com/doc/refman/5.6/en/fractional-seconds.html).  Starting with version 6.5, Connector/Net fully supports milliseconds. This support does not affect compatibility with older versions of MySQL and it gives you the ability to use fractional seconds when combining Connector/Net 6.5 with MySQL Server 5.6 or later.  Let's see how we should use it.

Creating a DateTime column that include Milliseconds value.

You can do this either using Connector/Net or using any MySQL client with a valid connection to your database.

For this case we're going to use MySqlCommand class within a console application in VS 2010.

…

Since the release of the 5.6 Community MySQL Server there is support for the milliseconds value in Time, TimeStamp and DateTime types.  You can find more information on this new feature at (http://dev.mysql.com/doc/refman/5.6/en/fractional-seconds.html).  Starting with version 6.5, Connector/Net fully supports milliseconds. This support does not affect compatibility with older versions of MySQL and it gives you the ability to use fractional seconds when combining Connector/Net 6.5 with MySQL Server 5.6 or later.  Let's see how we should use it.

Creating a DateTime column that include Milliseconds value.

You can do this either using Connector/Net or using any MySQL client with a valid connection to your database.

For this case we're going to use MySqlCommand class within a console application in VS 2010.

…

As we all look forward eagerly to 2012, bloggers around the gblobe are writing about their insightful reflections on 2011. You’re also welcome to write your’s regarding to database arena in the comments, if you like. This Log Buffer Edition welcomes you to the new year with festive posts from Oracle, SQL Server and MySQL [...]

Here are step-by-step instructions for installing Oracle Database 11g Release 2 on Windows 7. It’s provided in response to questions posted on my step-by-step instructions for installing Oracle 11gR1 on Windows 7. For reference, I posted the former because it didn’t work without intervention. I hadn’t updated step-by-step instructions because Oracle Database 11g Release 2 has always worked for me when installing on Windows 7.

A number of students and blog readers have mentioned that it didn’t work for them. My guess is that they had configuration issues within the Windows 7 environment. There are some Windows 7 configuration caveats before you perform this installation, and they are:

Windows 7 Configuration Steps

1. Make sure you have at least 3 GB of memory on your Windows PC, or that you can …

How much memory does my Oracle instance use? How much memory do my database connections use?

These are questions that can help with capacity planning of your server’s Physical and Virtual memory. There are several write ups out there on the web that attempt to address these questions. From what I could gather from them, there is only one truly good way to tell exactly how much memory is currently in use by an oracle instance (or any other system, http, mysql, etc), as well as the average memory usage for oracle dedicated connection processes.

This technique makes use of the “pmap” command. This command displays the real current memory usage of a process broken down by memory segment types. By parsing the output of pmap, we can make several useful calculations. Note that this command is available for Linux, Solaris and HP-UX servers. It is also apparently available on AIX as “procmap”.

I have tested the below …

I see so many posts on what happened to company X, product Y and dream Z that I couldn't resist the temptation to summarize this great year for MySQL. At the end of 2010, Oracle did an announcement we were all waiting for: MySQL 5.5 is GA! Another year has passed since then and it's time to reflect on what has been done.

I know this is a long post. I tried to rewrite it at least 10 times to make it shorter, but I couldn't condense the list. Hence, I wrote a summary in the beginning for those who don't want to read it all.

I believe that 2011 was an exceptional year for MySQL and I really enjoy being part of this team. I wish all of us a lot of success and fun in the years to come!

Summary:
Oracle released many  …