[jboss-user] [Beginners Corner] - Jboss DataSource Lookup question

hi, I am new beginner of Jboss. Hope somebody can give me a clear concept of the following questions. Thanks in advance. I setted up the DataSource in mysql-ds.xml file as follows: <local-tx-datasource> <jndi-name>MySqlDS</jndi-name> <connection-url>jdbc:mysql://localhost:3306/home</connection-url> <driver-class>com.mysql.jdbc.Driver</driver-class> <user-name>root</user-name> admin <min-pool-size>5</min-pool-size> <max-pool-size>20</max-pool-size> <idle-timeout-minutes>5</idle-timeout-minutes> </local-tx-datasource> and when I start up the jboss, jboss printed out the following information: Bound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=MySqlDS' to JNDI name 'java:MySqlDS' and in the program, I was supposed to code as follows: Context ctx = new InitialContext(); ds = (DataSource)ctx.lookup("java:MySqlDS"); So, 1). I want to know why I can't replace this sentence "ds = (DataSource)ctx.lookup("java:MySqlDS");" as "ds = (DataSource)ctx.lookup("java:comp/env/MySqlDS");"? 2). what is the difference between "java:MySqlDS" and "java:comp/env/MySqlDS"? Someone told me that "java:comp/env/MySqlDS" is mostly used in real project, but "java:MySqlDS" not. 3). I know "java:MySqlDS" is for getting a DataSource config in the *-ds.xml file, however "java:/comp/env/MySqlDS" is for using JDBC connections, is my opinion correct? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4017113#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...