Erro no TOMCAT ao criar DataSource....message Error invoking operation addResource

Olá pessoal,

estou com esse erro ao Create New Data Source no TOMCAT

versão 5.5

ao cliclar no botão Save aparece a mensagem :

HTTP Status 500 - Error invoking operation addResource

type Status report

message Error invoking operation addResource

description The server encountered an internal error (Error invoking operation addResource) that prevented it from fulfilling this request.
Apache Tomcat/5.5.26
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Se alguém puder me ajudar agradeceria....

–como estou criando


 Data Sources
Property
	
Value
JNDI Name:  java:comp/env/jdbc/local
	
Data Source URL:jdbc:mysql://localhost:3306/prova
	
JDBC Driver Class:com.mysql.jdbc.Driver
	
User Name:root		
	
Password:root
	
Max. Active Connections:5
	
Max. Idle Connections:2
	
Max. Wait for Connection:5000
	
Validation Query: