Encountered the symbol "(" when expecting one of the following:

[Error] PLS-00103 (1:22):pls-00103:Encountered the symbol "(" when expecting one of the following:

:=.),@% default character

The symbol ":=" was substituted for "(" to continue.

出现这个错误的原因是我在写procedure的有参时，参数里面是这么写的：

create or replace procedure test_wyh_pro (test_statement in varchar2(10))

正确的写法是参数中不需要定义数据的长度，去掉（10）即可。