Most people would not consider the call to be the issue,
but here's an amusing bug in Oracle Sql Developer that may emulate the issue..
exec dbowner.sp1 ( p1, p2, p3); -- notes about the fields
Error report -
ORA-06550: line 1, column 362:
PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following:
begin case declare end exception exit for goto if loop mod
null pragma raise return select update while with
<< close current delete fetch lock insert
open rollback savepoint set sql execute commit forall merge
pipe
06550. 00000 - "line %s, column %s:\n%s"
*Cause: Usually a PL/SQL compilation error.
*Action:
exec dbowner.sp1 ( p1, p2, p3);
-- notes about the fields
PL/SQL procedure successfully completed.