ORALCE10g驱动classes12.jar版本问题 类型长度大于最大值

参考资料:[url]http://xiaobo.iteye.com/blog/44466[/url]
创建存储过程返回游标集
获得Connection调用prepareCall方法 报如下错误
java.sql.SQLException: 类型长度大于最大值

oracle.jdbc.OracleCallableStatement csmt = null;
csmt = (oracle.jdbc.OracleCallableStatement)conn.prepareCall("{call t(?,?,?)}");
csmt.setString(1,'');
csmt.setString(2,'');
csmt.registerOutParameter(3, oracle.jdbc.OracleTypes.CURSOR);
csmt.execute();
ResultSet rs = csmt.getCursor(3);

如下异常:

java.sql.SQLException: 类型长度大于最大值
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:124)
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:161)
 at oracle.jdbc.driver.DatabaseError.check_error(DatabaseError.java:884)
 at oracle.jdbc.driver.T4CMAREngine.buffer2Value(T4CMAREngine.java:2230)
 at oracle.jdbc.driver.T4CMAREngine.unmarshalUB4(T4CMAREngine.java:1146)
 at oracle.jdbc.driver.T4CMAREngine.unmarshalDALC(T4CMAREngine.java:2097)
 at oracle.jdbc.driver.T4C8TTIuds.unmarshal(T4C8TTIuds.java:127)
 at oracle.jdbc.driver.T4CTTIdcb.receiveCommon(T4CTTIdcb.java:125)
 at oracle.jdbc.driver.T4CTTIdcb.receiveFromRefCursor(T4CTTIdcb.java:103)
 at oracle.jdbc.driver.T4CResultSetAccessor.unmarshalOneRow(T4CResultSetAccessor.java:165)
 at oracle.jdbc.driver.T4CTTIrxd.unmarshal(T4CTTIrxd.java:787)
 at oracle.jdbc.driver.T4CTTIrxd.unmarshal(T4CTTIrxd.java:704)
 at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:526)
 at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:179)
 at oracle.jdbc.driver.T4CCallableStatement.execute_for_rows(T4CCallableStatement.java:782)
 at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1027)
 at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:2887)
 at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:2978)
 at oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:4102)
 at getConnection.TestProcedure.main(TestProcedure.java:37)
java.sql.SQLException: 违反协议
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:124)
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:161)
 at oracle.jdbc.driver.DatabaseError.check_error(DatabaseError.java:884)
 at oracle.jdbc.driver.T4C7Ocommoncall.receive(T4C7Ocommoncall.java:132)
 at oracle.jdbc.driver.T4CConnection.logoff(T4CConnection.java:384)
 at oracle.jdbc.driver.PhysicalConnection.close(PhysicalConnection.java:1035)
 at getConnection.TestProcedure.closeConn(TestProcedure.java:70)
 at getConnection.TestProcedure.main(TestProcedure.java:47)

这种现象很可能是驱动版本太低导致(首先保证你的存储过程无问题，java书写方式正确)，
后来改成版本更改的java ORCLE驱动 问题立即解决(换成ora9.2.0.3-jdk1.4.jar)
主要原因是classes12.jar 驱动的BUG所致，版本不支持，不支持oralce10g的某些特性，需要及时更新最新的oracle驱动 jar包，这只是一种很有可能存在的问题一个方面。
oracle中jdbc驱动包的说明
[url]http://junsansi.itpub.net/post/29894/279694[/url]
学习Oracle数据库的常用网址
[url]http://www.weste.net/html/200408/20040824QBI095416.html[/url]
oracle官网技术资料
[url]http://www.oracle.com/technology/global/cn/index.html[/url]
附件中有一个连接示例及各相关驱动包 :wink: