非预定义异常(Non-predefined Exceptions) 非预定义异常对应于Oracle系统错误,这些错误有错误编号但没有预定义的异常名。为了处理这些异常,我们需要在PL/SQL块中声明一个异常名,并使用PRAGMA EXCEPTION_INIT语句将其与Oracle错误编号关联起来。 plsql DECLARE e_deleteid_exception EXCEPTION; PRAGMA EXCEPTION_INIT(e_...
In PL/SQL, a warning or error condition is called anexception. Exceptions can be internally defined (by the run-time system) or user defined. Examples of internally defined exceptions includedivision by zeroandout of memory. Some common internal exceptions have predefined names, such asZERO_DIVID...
STORAGE_ERROR: 运行 PL/SQL 时,超出内存空间 SYS_INVALID_ID: 无效的 ROWID 字符串 TIMEOUT_ON_RESOURCE: Oracle 在等待资源时超时 oracl 11g: Pl/SQL LANGUAGE REFERENCE ---> 11 PL/SQL error handling ---> Predefined Exceptions 练习1:捕获预定义异常 declare v1 emp.sal%type; begin select sal int...
Predefined Exceptions:Built-in exceptions likeNO_DATA_FOUND,TOO_MANY_ROWS, andZERO_DIVIDE. User-Defined Exceptions:Custom exceptions are declared usingEXCEPTIONand raised usingRAISE. For example, the following PL/SQL block retrieves the salary of an employee with ID 100, raises a custom exception ...
Associating a PL/SQL Exception with a Number: Pragma EXCEPTION_INIT Defining Your Own Error Messages: Procedure RAISE_APPLICATION_ERROR Redeclaring Predefined Exceptions How PL/SQL Exceptions Are Raised Raising Exceptions with the RAISE Statement ...
Implicitly : Predefined Oracle Server , Nonpredefined Oracle Server Explicitly : User-defined Syntax : EXCEPTION WHEN exception1 THEN WHEN exception2 THEN …… WHEN OTHERS THEN 当程序抛出异常时 , 程序不会象设想一样 , 返回到某段程序... 直接退出程序 . ...
16.What are types of exceptions in PL/SQL? Answer : There are 2 types of exceptions in PL SQL : 1.Predefined Exceptions : These exceptions are system defined exceptions. 2.User defined Exceptions: User defined exceptions are exceptions which are defined by the user in the program. ...
Implicitly : Predefined Oracle Server , Nonpredefined Oracle Server Explicitly : User-defined Syntax : EXCEPTION WHEN exception1 THEN WHEN exception2 THEN …… WHEN OTHERS THEN 当程序抛出异常时 , 程序不会象设想一样 , 返回到某段程序... 直接退出程序 . ...
How to handle exceptions A list of predefined exceptions Other scripting and PL/SQL skills How to drop database objects without displaying errors How to use bind variables How to use substitution variables How to use dynamic SQL How to run a script from a command line ...
Oracle PL/SQL也提供了一系列预定义的异常( Explicitly Raising Predefined Exception),这些异常在Oracle的数据库操作中自动被抛出,例如NO_DATA_FOUND(当SELECT INTO语句未返回任何行时)或VALUE_ERROR(当尝试将值赋给变量时,该值超出了变量的允许范围)。 你可以直接在EXCEPTION部分捕获这些预定义的异常,但你不能直接RA...