Invalid column type error in ibatis Stored Procedure SQL State [null] error code [17004]

During the development process, you must call the stored procedure and configure the parameter ing in the configuration file of ibatis.

However, the "invalid column type" error (SQL State [null] error code [17004]) occurs. Many people have encountered this problem online, and are finally located on the jdbctype in the configuration file.

The value of jdbctype must be defined in the value defined in the Java. SQL. types class. If the varchar type is written as varchar2, the following error occurs: Check carefully.