Indexes. They're one of the most powerful and misunderstood aspects of SQL performance. In this post we'll look at the purpose of an index, how to create and choose choose your index type. Then finish with a discussion of how to decide what to index and
Steps for Connecting SQL Server and Oracle 1. Creating the mwrep User Perform the following actions to create a new database user: It should be noted that you can skip these steps if you already have a system orcl connection and a mwrep user. Step 1: Use the desktop icon to launch ...
I’ve always appreciated the CREATE OR REPLACE functionality in Oracle for views, packages and triggers, and I’ve often wanted a similar CREATE OR REPLACE TABLE. Many times, I’ll find myself needing to quickly drop and re-create a table while I’m designing it. This is tedious, becaus...
I want to create one SQL Tuning Set(STS) for the statement running in TEST db.I looked at the package DBMS_SQLTUNE but could not find the proedure/funtion to create STS manually from a query.
If you are working on Oracle database either as developer or DBA, you need a good front-end to manage your database. In the old days, one of the popular option was Toad. But, now, there is even a better and robust option; SQL Developer. SQL Developer is
Oracle SQL Developer is the database IDE and Oracle SQL Developer Data Modeler is our dedicated data modeling solution. Where it gets interesting is that the entire Data Modeler product also runs inside of SQL Developer. When I do demo’s of building quick ad hoc models in SQL Developer, ...
create table toys_clone as select * from toys;Easy, right?Yes. But, as always, there's more to it than this. You'll want to add some constraints to your table. And there are many types of table available in Oracle Database, including:Table...
Programming languages like SQL, MySQL, SQL Server, etc. can provide functionalities to achieve this. Creating a User create user <username> identified by "<password>";Granting Permissions: grant <privilege> to <user>Creating a table: create table table_name( column1 data t...
To attach a PL/SQL library in the Oracle Forms follow the following steps:1. Click on Attached Libraries node in Object Navigator and then click on +
Querying Data at a Point in Time (Flashback Query)Although some Oracle tools and applications simplify or mask the use of SQL, all database operations are performed using SQL, to take advantage of the security and data integrity features built into Oracle.Overview...