CALL 
    { [schema .] [ type . | package . ] 
      { function | procedure | method } [@ dblink_name]
    | expr . method
    } 
[ expr [, expr]... ]
[INTO : host_variable [[INDICATOR] : indicator_variable]];

For information on the symbols and conventions of Backus-Naur Form (BNF) syntax, see Appendix A.