What is a named system exception in Oracle? Named system exceptions are exceptions that have been given names by PL/SQL. They are named in the STANDARD package in PL/SQL and do not need to be defined by the programmer. Oracle has a standard set of exceptions already named as follows: ...
condition_expression:表示一个表达式,当其值为TRUE时,程序会执行IF下面的PL/SQL语句(即plsql_sentence1语句);否则,程序将执行ELSE下面的OL/SQL语句,即plsql_sentence2语句。 plsql_sentence1:IF语句的表达式值为TRUE时,要执行的PL/SQL语句; plsql_sentence2:IF语句的表达式值为FLASE时,要执行的PL/SQL语句。 (...
服务器上oracle经常会使用plsql developer访问,很多时候我们用的服务器,或者之前的密码我们并不知道,这个时候需要修改system的用户密码,当然也可以无用户登录,但是修改必然还是好些。下面讲讲方法,windows服务器,oracle11g。 windows服务器:打开cmd运行命令 输入sqlplus /nolog —– 实现无用户名登录 conn /as sysdba —...
SQL> create table mytest(name varchar2(30),passwd varchar2(30)); 2、创建过程 SQL> create procedure sp_prol is begin --执行部分 insert into mytest('hjadsfhas','sdkhfdsj'); end; / 也可以使用(replace 表示如果有sp_prol就替换) SQL> create or replace procedure sp_prol is 2 begin 3...
PLSQL登陆忘记system密码 进入sql控制台 sqlplus / as sysdba 使用oracle用户执行下面语句,就可以使用conn进行登陆了,这里的密码就是123456 alter user system identified by 123456; commit;
PL/SQL经常使用,有时候需要dba权限,今天登录发现报错网上的报错基本上都是一个问题:sysdba和dba没有分的清楚dba是一种role对应的是对Oracle实例里对象的操作权限的集合,sysdba是概念上的role是一种登录认证时的身份标识而已。下面我们通过详细的实例来看看他们的区别物理上的roledba是可以在数据字典里查到的SQL>select...
ORA-06508 PL/SQL : Could not find program unit being called error in APPS.CSP_PARTS_REQUIREMENT orAPPS.CSP_CSH_INT_PVTpackages showing in system or when trying to recompile after applying a patch. Error ORA-04063: Package body "APPS.CSP_PARTS_REQUIREMENT" has errors ...
SYSTEM表空间是Oracle数据库最重要的一个表空间,存放了一些DDL语言产生的信息以及PL/SQL包、视图、函数、过程等,称之为数据字典, 因此该表空间也具有其特殊性,下面描述SYSTEM表空间的相关特性及备份与恢复。 一、SYSTEM表空间的管理 1.建议不存放用户数据,避免用户错误导致系统表空间不可用 ...
The system stored procedures in the following tables are used only within an instance of SQL Server or through client APIs and aren't intended for general customer use. They are subject to change and compatibility isn't guaranteed.The following stored procedures are documented:...
All services are defined using the same basic paradigm -- the input and output to the service, if any, is a single set of values. Errors are communicated via Java Exceptions that are thrown by the services. The normal behavior when a service throws an exception is for all database work ...