Oracle Error Message
PLS-00427: RPC defaults cannot use builtins when versions of STANDARD differ
Reason for the Error
An attempt was made to call a remote subprogram whose defaulted parameter value is calculated using a builtin operation. If the calling system uses a different version of package STANDARD than does the called system, a defaulted expression must be either a simple numeric or string literal, NULL, or a direct call to a user-written function.
Solution
Call the remote subprogram by passing each actual parameter value explicitly.