Oracle

See what the user's proifle is, which is usually default:Sql>select username,profile from Dba_users; To view the password expiration settings for a specified profile (such as default):Sql>select * from Dba_profiles s WHERE s.profile= ' DEFAULT '

"Go" Oracle-database instance, table space, user, table relationshipsA complete Oracle database is typically made up of two parts: an Oracle database and a database instance.1) The database is a collection of a series of physical files (data files,

Example of creating a oraclexe table spaceSqlplus/nologConnect SYS as SYSDBASql>Create Tablespace OPFOCNDataFile ' c:\\oraclexe\\app\\oracle\\oradata\\pf\\opfo.dbf ' size 1024mAutoextend on next 1m maxsize 3000mExtent Management LocalSegment Space

1.NVL (EXP1,EXP2)NVL lets you replace null (returned as a blank) with a string in the results of a query. If expr1 is null and then NVL returns expr2. If expr1 is isn't null, then NVL returnsexpr1.The function is to handle null values in an

Oracle 11G introduces the memory_max_target and Memory_target parameters for the database's Memory auto-management (AMM), which is intended to modify the two parameters beyond the size of the physical memory, and the view to see what errors the

Do you have this kind of trouble, want to turn the company project into its own project resource pool. But the project was completely copied down to its own machine to run, found the inability to access the remote database error, in order to solve

http://blog.csdn.net/magicboylinw/article/details/7025885Oracle Instant Client (Instant clients) installation and configurationOracleoracleoraclepathpathpathserviceservice Tool Database ServerFirst, download:

The connection is not the same as a normal database. connection.url using load-balance = yes or errorusernamejdbc:oracle:thin:@ (DESCRIPTION = (address = (PROTOCOL = tcp) (HOST = 11.172.0.71) (PORT = 1521)) (address = (PROTOCOL = tcp) (H OST = 11.172

1. CPU Time Normal, ranked first in waiting events Num_cpu_sockets Number of physical CPUs Num_cpu_cores CPU Number of cores Num_cpus Number of logical CPUs 2. buffer busy waits (buffer busy wait/ read by other session)

Create a database test1. Open the Oracle Net Manager2. Service Naming: TestTCPIP Host: 127.0.0.1 Port: 15213. Listening programsSelect a listening locationNetwork address: localhostPort: 1521Select Database ServiceGlobal database name Sid:test4.

Instructions for using Oracle function ListaggAt work, customers often come up with the requirement that they want to enumerate the dates one by one in a summary merge., the original data is this:Customers want to be able to achieve such a summary

There are two types of cursors in Oracle: Explicit cursors, implicit cursors. The display cursor is a cursor defined with the cursor...is command, which can process multiple records returned by a query statement (SELECT), whereas an implicit cursor

PSU Upgrade (This experiment is to upgrade 10.2.0.3.12 to 10.2.0.3.15)First, unpack the installation packageCustom storage Path is/home/oracle/yjb/psu/10.2.0.3.15cd/home/oracle/yjb/psu/10.2.0.3.15Unzip

Original address: http://www.cnblogs.com/Ronger/archive/2012/03/28/2420962.htmlMaterialized views are a special physical table, and the materialized view is relative to the normal view. The normal view is a virtual table, the limitations of the

1, Oracle 10g is established by the NETCA mode is the dynamic registration method2, if you want to change the method of static registration, add the following content in the Listener.oraSid_list_listener = (Sid_list = ( Sid_desc =

Create Table spaces and users in Oracle and create tables in oracle User name: C # NEWO ========================================================== ============================================ /* Divided into four steps */ /* Step 2: create a

Unlock database users and database users 1. log on to and unlock the account with the dba role. First, set the specific time format to view the specific time.SQL> alter session set nls_date_format = 'yyyy-mm-dd hh24: mi: ss ';Session altered.2.

Oracle rman catalog backup and recovery, rmancatalog 1. Lost control fileStart the database to nomount: restore controlfile from autobackup/restore controlfile from '+ data/backup/contrlbak /...' -> Alter database mount-> open;2. Accidentally

Outer Join, left Outer Join Definition: Used to query records that meet the connection conditions and do not meet the connection conditions. Query emp table records SELECT * FROM emp;Empno ename job mgr hiredate sal comm deptno1 7369 smith clerk 7902

Introduction to ORACLE Database asynchronous IO, oracle asynchronous io Asynchronous IO Concept Linux asynchronous I/O (AIO) is an enhanced function provided by the Linux kernel. It is a standard feature of the Linux 2.6 kernel. Of course we can