weblogic报错：Couldn't initialize OracleLobHandler，有谁遇到过吗？

Question

之前的war包都运行的好好的，可最近忽然weblogic报出这样的错误：
org.springframework.dao.DataAccessResourceFailureException: Could not create Oracle LOB; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: Couldn't initialize OracleLobHandler because Oracle driver classes are not available. Note that OracleLobHandler requires Oracle JDBC driver 9i or higher!; nested exception is java.lang.NullPointerException
at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:368)
at
......
org.springframework.dao.InvalidDataAccessApiUsageException: Couldn't initialize OracleLobHandler because Oracle driver classes are not available. Note that OracleLobHandler requires Oracle JDBC driver 9i or higher!; nested exception is java.lang.NullPointerException
at org.springframework.jdbc.support.lob.OracleLobHandler.initOracleDriverClasses(OracleLobHandler.java:164)
at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:339)

spring配置文件都有配置：
<!-- 支持对clob的支持 add by yangbo 0601-->
class="org.springframework.jdbc.support.lob.OracleLobHandler"
lazy-init="true">





class="org.springframework.jdbc.support.nativejdbc.CommonsDbcpNativeJdbcExtractor"
lazy-init="true" />
weblogic的jdb选的驱动是oracle 9i的 Oracle's Driver(Thin)Versions:0.0.1,9.2.0,10

怎么样才能解决这个问题呀？急死我了！都好几天了

Answer 1

[quote]Couldn't initialize OracleLobHandler because Oracle driver classes are not available. Note that OracleLobHandler requires Oracle JDBC driver 9i or higher!; nested exception is java.lang.NullPointerException [/quote]

栈里边告诉你了错误的根源：
driver class得不到，驱动加载有问题啊。
你再检查一下，是否驱动被换过？