阿中中广场舞对跳:‘Cannot create resource instance‘ ！

来源：百度文库 编辑：九乡新闻网 时间：2024/04/29 17:54:55
用Tomcat，最担心的就是配置JNDI的DataSource的时候出现问题，随着各大厂商发布自己的JDBC的实现，兼容性的问题也就越来也突出了...
一般我们都是用Tomcat自带的DBCP来处理，配置如下：



driverClassName
oracle.jdbc.driver.OracleDriver


driverName
jdbc:oracle:thin:@server:port:sid


user
########


password
########


Oracle JDBC Driver for JDK 1.4 or JDK 1.5
http://www.oracle.com/technology/software/tech/java/sqlj_jdbc/htdocs/jdbc_10201.html
不过这个写法，如果在JBuilderX中，跑Tomcat 4.1，加上最新版的 Oracle JDBC Driver会存在问题，系统抛出的错误为：
javax.naming.NamingException: Cannot create resource instance
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:189)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:301)
at org.apache.naming.NamingContext.lookup(NamingContext.java:834)
at org.apache.naming.NamingContext.lookup(NamingContext.java:181)
at org.apache.naming.NamingContext.lookup(NamingContext.java:822)
at org.apache.naming.NamingContext.lookup(NamingContext.java:181)
at org.apache.naming.NamingContext.lookup(NamingContext.java:822)
at org.apache.naming.NamingContext.lookup(NamingContext.java:181)
at org.apache.naming.NamingContext.lookup(NamingContext.java:822)
at org.apache.naming.NamingContext.lookup(NamingContext.java:194)
at org.apache.naming.SelectorContext.lookup(SelectorContext.java:183)
at javax.naming.InitialContext.lookup(InitialContext.java:347)
看来DBCP针对java.sql.DataSource相关的实现与ojdbc14.jar存在兼容性的问题，需要按照下面的写法才能OK：



factory
oracle.jdbc.pool.OracleDataSourceFactory


driverClassName
oracle.jdbc.driver.OracleDriver


url
jdbc:oracle:thin:@server:port:sid


user
########


password
########


原来Oracle自己实现了DataSource的工厂类来管理DataSource的建立！
同样发现微软的SQL Server 2000 Driver for JDBC Service Pack 3也存在这个问题！
http://www.microsoft.com/downloads/details.aspx?familyid=07287b11-0502-461a-b138-2aa54bfdc03a&displaylang=en
需要如下配置：



factory
com.microsoft.jdbcx.sqlserver.SQLServerDataSourceFactory


driverClassName
com.microsoft.jdbcx.sqlserver.SQLServerDataSource


driverName
SQLServer


description
My DataSource


serverName
########


portNumber
1433


selectMethod
cursor


databaseName
########


user
########


password
########


loginTimeout
3000

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