begin
EXECUTE IMMEDIATE 'CREATE SEQUENCE S_TEST START WITH 1 INCREMENT BY 1';
exception when OTHERS then
Null;
end;
直接通过编号参考例外：
BEGIN
EXECUTE IMMEDIATE 'CREATE SEQUENCE S_TEST START WITH 1 INCREMENT BY 1';
EXCEPTION
WHEN OTHERS THEN
IF sqlCODE = -955 THEN
NULL; -- suppresses ORA-00955 exception
ELSE
RAISE;
END IF;
END;
其他选项是使用EXCEPTION_INIT Pragma指令将已知的Oracle错误号绑定到用户定义的异常;
DECLARE
name_in_use exception; --declare a user defined exception
pragma exception_init( name_in_use,-955 ); --bind the error code to the above
BEGIN
EXECUTE IMMEDIATE 'CREATE SEQUENCE S_TEST START WITH 1 INCREMENT BY 1';
EXCEPTION
when name_in_use then
null; --suppress ORA-00955 exception
END;
BTW Is there any Syntax to catch errors by just providing the error-codes?
是的,我在第一个例子中证明了这一点
进一步阅读以下变化：
> Oracle Reference Documentation on Handling PL/SQL Exceptions
