System Requirements for the JDBC Driver
To access data from a SQL Server database by using the Microsoft SQL Server JDBC Driver, you must have the following components installed on your computer:
Microsoft SQL Server JDBC Driver
Java Runtime Environment
Java Runtime Environment Requirements
Starting with the Microsoft SQL Server JDBC Driver version 2.0, the JDBC driver support for Java Database Connectivity (JDBC) Spec API has been extended to include the JDBC 4.0 API. The JDBC 4.0 was introduced as part of the Sun Java SE Development Kit (JDK) 6.0 and Java Runtime Environment (JRE) 6.0. JDBC 4.0 is a superset of the JDBC 3.0.
The Microsoft SQL Server JDBC Driver version 2.0 supports both JDBC 3.0 and JDBC 4.0.
When you deploy the Microsoft SQL Server JDBC Driver version 2.0 on Windows and UNIX operating systems, you must use the installation packages, sqljdbc_<version>_enu.exe and sqljdbc_<version>_enu.tar.gz, respectively. For more information about how to deploy the JDBC Driver, see Deploying the JDBC Driver topic.
To support backward compatibility and possible upgrade scenarios, the JDBC Driver version 2.0 includes 2 JAR class libraries in each installation package: sqljdbc.jar and sqljdbc4.jar.
sqljdbc.jar class library provides support for JDBC 3.0.
sqljdbc.jar class library requires a Java Runtime Environment (JRE) of version 5.0. Using sqljdbc.jar on JRE 6.0 will throw an exception when connecting to a database.
The JDBC Driver version 2.0 does not support JRE 1.4. You must upgrade JRE 1.4 to JRE 5.0 or later when using the JDBC Driver version 2.0. In some cases, you might need to recompile your application because it might not be compatible with JDK 5.0 or later. For more information, see the documentation on Sun Microsystems Web site.
sqljdbc4.jar class library provides support for JDBC 4.0. It includes all of the features of the sqljdbc.jar as well as the new JDBC 4.0 methods.
sqljdbc4.jar class library requires a Java Runtime Environment (JRE) of version 6.0 or later. Using sqljdbc4.jar on JRE 1.4 or 5.0 will throw an exception.
Use sqljdbc4.jar when your application must run on JRE 6.0, even if your application does not use JDBC 4.0 features.
Note that the JDBC driver is designed to work with and be supported by all major Sun equivalent Java virtual machines, but is tested on Sun JRE 5.0 or later.
SQL Server Requirements
The JDBC driver has been designed specifically to use features introduced with SQL Server 2005, but it is also backward-compatible with SQL Server 2000, including the 64-bit version.
The Microsoft SQL Server JDBC Driver version 2.0 can connect to SQL Server 2008 but does not fully support the new data types or other features that are new in SQL Server 2008.
Operating System Requirements
The JDBC driver is designed to work on any operating system that supports the use of a Java Virtual Machine (JVM). However, only Sun Solaris, SUSE Linux, and Windows XP or later operating systems have officially been tested.
The JDBC driver supports all SQL Server column collations. For more information about the collations supported by the JDBC driver, see International Features of the JDBC Driver.
For more information about collations, see "Working with Collations" in SQL Server Books Online.