Oracle查看用户锁表信息
select p.spid,
a.serial#,
c.object_name,
b.session_id,
b.oracle_username,
b.os_user_name
from v$process p,
v$session a,
v$locked_object b,
all_objects c
where p.addr = a.paddr
and a.process = b.process
and c.object_id = b.object_id
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Hey all,
Since there seems to be a fair bit of disinformation, and utter nonsense,
floating around since my talk at the Black Hat Federal security conference
the other day, I have decided to publish the following papers.
http://www.databasesecurity.com/HackingAurora.pdf
http://www.databasesec ......
过程、函数
create or replace procedure p1
is
empname emp.ename%type;
begin
select ename into empname from emp where empno=7788;
dbms_output.put_line(empname);
end;
SQL> ed
SQL> /
Procedure created
SQL> exec p1;
......
搞oracle都会经常碰到rowid，本文是笔者根据网上各位的文章，加上自己学习中的体会，总结而成。
一.rowid简介
rowid就是唯一标志记录物理位置的一个id，在oracle 8版本以前，rowid由file#+block#+row#组成，占用6个bytes的空间，10 bit 的 file# ......
Oracle SQL PLUS 基本操作1
登录
c:\>sqlplus "sys/test1234 as sysdba" 以sysdba身份登录
c:\>sqlplus/nolog 以nolog身份登录
sql> connect sys/test1234 as sysdba
Connected.
启动
SQL> startup &nb ......
-- get all dictionary for oracle db
select * from dict;
--select * from dictionary;
-- get all columns for dictionarys
select * from dict_columns;
-- get the default name-space for current user
select username,default_tablespace from user_users;
-- get roles for current user
select * from us ......
