Apache Derby DB Error Code XCL26 – Parameter is not an output parameter. Posted by AbundantCode In this blog post, let’s learn about the error message “XCL26- Parameter is not an output parameter.” in Apache Derby Database and the description of the error. Error Message XCL26- Parameter is not an output parameter. Error Details Parameter is not an output parameter. Share this:PostLike this:Like Loading... AbundantCode January 3, 2024