Cannot create jdbc driver of class for connect url

 · Cannot create JDBC driver of class '' for connect URL 'null' www.doorway.ruinterException. at www.doorway.rutocol(Unknown Source) at www.doorway.ruRL(Unknown Source) at www.doorway.rusURL(Unknown Source) at .  · Cannot create JDBC driver of class '' for connect URL 'null' Member Posts: 49, AM edited AM in Java Database Connectivity (JDBC).  · Message: Found a DataSource for lookup string 'java:comp/env/jdbc/RMDB'! Error logged: www.doorway.rutedException: Cannot create JDBC driver of class '' for connect URL 'null' at www.doorway.ruDataSource(www.doorway.ru).

Error: Cannot create JDBC driver of class '' for connect URL 'null' Member Posts: 35 AM edited PM in Database Connectivity Discussions. www.doorway.rutedException: Cannot create PoolableConnectionFactory (The TCP/IP connection to the host CARTOSQL, port has failed. Error: Connection refused: connect. Please verify the connection properties and check that a SQL Server instance is running on the host and accepting TCP/IP connections at the port, and that. Unable to create class 'JDBC driver' to connect 'null' url: I don't understand this exception Why does it say a null URL and give an empty class '' in the exception when I specify the database URL? I am trying to connect to the derby database through a servlet when using Tomcat.

22 កក្កដា The error "Cannot create JDBC driver of class '' for connect URL 'null' usually occurs because the JDBC driver is not in the right place (or. [DEBUG]: Failed to establish connection with datastore www.doorway.rutedException: Cannot create JDBC driver of class '' for connect URL. 2 មីនា Cannot create JDBC driver of class '' for connect URL 'null' · 1) Create a www.doorway.ru in the META-INF. The www.doorway.ru defines the context below.