dual homed

Funny test of dual table C:/> sqlplus "/As sysdba" SQL * Plus: Release 9.0.1.0.1-production on Thu Aug 8 09:20:57 2002 (C) Copyright 2001 Oracle Corporation. All rights reserved. Connected:Oracle9i Enterprise Edition Release 9.0.1.1.1-ProductionWith the partitioning OptionJserver release 9.0.1.1.1-Production SQL> select count (*) from dual; Count (*)----------1 SQL> select * from

The concept of Dual-machine Hot Standby includes two meanings: broad sense and narrow sense.In a broad sense, two servers are used to back up and execute the same service for important services. When one server fails, the other server can assume service tasks, so that the system can automatically guarantee continuous service without manual intervention. The standby server solves the problem of uninterrupted service when the primary server fails. Howev

Tags: des io using ar strong for file data artOracle the dual table in the detailed1,DUALpurpose of the tableDual is a physically existing table in Oracle that can be read by any user, often in a SELECT statement block without a target table--View current connected userSql> Select User from dual;USER------------------------------SYSTEM--View current date, timeSql> select Sysdate from

Oracle Dual table details 1. Use of DUAL tablesDual is an existing table in Oracle that can be read by any user. It is often used in Select statement blocks without a target table.-- View the current connected userSQL> select user from dual;USER------------------------------SYSTEM-- View the current date and timeSQL> select sysdate from

Label:1, the use of dual tableDual is a physically existing table in Oracle that can be read by any user, often in a SELECT statement block without a target table--View current connected userConnected to Oracle Database 10g Enterprise Edition Release 10.1.0.2.0Connected as SYSSql> Select User from dual;USER------------------------------SYSTEM--View current date, timeSql> select Systimestamp from

1, the use of dual table Dual is an actual table in Oracle that can be read by any user and is often used in a SELECT statement block that does not have a target table (1) View current connected users Sql> Select User from dual; USER ------------------------------ SYSTEM (2) View the current date, time Sql> select Sysdate from

Label:Guide ] Dual is a virtual table that makes up the syntax rules for SELECT, and Oracle guarantees that there will always be only one record in dual. We can use it to do a lot of things. 　 Dual is a virtual table that makes up the syntax rules for SELECT, and Oracle guarantees that there will always be only o

The dual-tube telescope is a useful astronomical observation tool. You can use it to watch a game, concert, or birds in the sky. You can also use it to enjoy the galaxy, the crater on the moon, several satellites around Jupiter and countless stars 2 million light years away. Many people mistakenly think that the dual-tube telescope is not used for astronomical observation. In fact, it is a favorite tool of

Recently, I have found an interesting phenomenon in various major markets. All the users who come to the Computer City to crash, whether beginners, game players or masters, chose intel p4c series processor (supporting hyper-threading) and the i865 chipset (supporting dual-channel memory technology) motherboard, it seems that the selection of P4 with hyper-Threading Technology and supporting dual-channel chi

Recently, Oracle encountered a special table dual. I think oracle users have a special liking for dual. As a result, I found some posts on the Internet and thought it would be better to post them here for everyone to learn. Dual is a virtual table used to form the select syntax rule. Oracle ensures that there will always be only one record in

Today, the hype about dual-core processors is so widespread that the understanding of the technology seems to be out of the truth. Both AMD and Intel compliment the merits of their dual-core processors on their web pages. Their campaigns are timely, as most industry watchers believe the dual-core processors will be in the pipeline in 2006. But there are some st

Server Recently, with Intel's official release of its dual-core Xeon processor and the active follow-up of several domestic and foreign manufacturers, there seems to be a great interest in the dual-core technology, which has already cooled down. What is dual-core technology, I believe most people can understand, but why use d