IBM® DB2® Path Checker for z/OS® provides information
about potential access path changes before they occur, and can also
report changes that occur after you rebind a plan or package.
DB2 Path Checker allows DB2 programmers, system analysts, and database administrators (DBAs) to determine whether a bind of a database request module (DBRM) results in an access path change. DB2 Path Checker can test proposed or actual changes in plans and create a report of changed and unchanged paths, optionally providing cost estimates and DB2 catalog statistics for path changes.