But with a bitmap Oracle Database has to lock the affected rowid ranges for both the old and new values!As a result, bitmap indexes are best suited for tables that will only have one process at a time writing to them. This is often the case on reporting tables or data warehouses. ...
An introduction to the create table, alter table, and drop table commands in Oracle Database. Use these to create, change, and remove database tables.
This code shows how to use Oracle's User Defined Types such asVARRAYusing ODP.NET in aWHEREclause of a query in an Oracle Stored Procedure. I am passing three parameters into my Oracle Stored Procedure: the first parameter is a UDTVARRAYasnumber(ParameterDirection.IN); the second parameter i...
Learn to easily change case in Excel: from lower to upper, upper to lower, or to proper case. Use formulas and simple methods. Plus, discover free Fonts.
The Oracle Solaris 11 sysconfig command replaces the Oracle Solaris 10 sys-unconfig command and enables you to configure, unconfigure, and reconfigure systems. It also lets you generate system configuration profiles for use with the Automated Installer o
This chapter is a basic tour of the kernel-provided device infrastructure in a functioning Linux system. 本章是对Linux系统中内核提供的设备基础架构的基本介绍。 Throughout the history of Linux, there have been many changes to how the kernel presents devices to the user. We’ll begin by looking...
Oracle VM Server Oracle VM Manager Oracle VM guest imported as an assembly Note: You can also run this lab at your home or office on an x86 server, desktop, or laptop. Preparation (Done Before the Lab) To save time and fit in the one-hour slot of Oracle OpenWorld labs, the following...
How to use SQL parameters with dotConnect for Oracle dotConnect for Oracle enhances SQL handling capabilities with usage of parameters in SQL queries. You can make execution of a query or stored procedure very flexible using several simple techniques. This article describes some basics you must be ...
If you have a DNS then the idea is to configure three IP address in round robin system on the DNS server. If Oracle client wants to connect by using the scan DNS name he will get a list of the three IPs in a random order , He will try them one by one until he succeeded. This...
The decode function can be used in SQL for and IF-THEN-ELSE construction. It's an alternative for the CASE statement which was introduced in Oracle 8. Syntax: decode( expression , compare_value, return_value, [,compare, return_value] ... [,default_return_value] ) ...