Top 133 Oracle Exadata Interview Questions

Oracle Exadata Interview Questions:

Study the latest Exadata Interview Questions today here. If you are preparing for Oracle Exadata Interview Questions for Experienced or Freshers, you are at the right place to get the best questions and answers. Gathered all interview questions on Exadata from various websites into one place here. I hope, this makes it easier to prepare for interviews.

Here, We make sure that you refresh your technical knowledge on Exadata(pre-configured combination to run the Oracle Database).

Adding Partition To Existing Table In Oracle

How do I alter my existing table to create a range partition in Oracle

Creating partition is on a table is very important when you want to see performance improvement especially on DATE columns.

In this post, We will learn how to alter existing table with partition.

How to Create User and Grants in Oracle

What is Partition in Oracle:

Oracle Partitioning allows tables and indexes to be partitioned into smaller, more manageable units, providing database administrators with the ability to pursue a "divide and conquer" approach to data management. ... That table could be range- partitioned so that each partition contains one day of data.

ORA-00972: identifier is too long - Oracle Error - Solution

ORA-00972: identifier is too long 

Introduction:

In this tutorial, We will learn about error "ORA-00972: identifier is too long" in oracle. When this will happen and how to resolve it.

Error: 

When you encounter error code ORA-00972, a message saying appears "identifier is too long." This error is self explanative that is some problem with length of identifier.

ORA-00972: identifier is too long 

How to Create a User and Grant Permissions in Oracle

In this post, Learn how to create a user in oracle and How to provide grant permissions to the user in oracle.

How to Create a User in Oracle

Before creating a user in oracle, you must have admin access or system privilege to create new user and to create session.

Connect to Oracle as sysdba using following command. We are running this tutorial in Oracle 18C version.

H:\>sqlplus / as sysdba

Output:

H:\>sqlplus / as sysdba

SQL*Plus: Release 18.0.0.0.0 - Production on Tue Apr 16 12:47:26 2019
Version 18.3.0.0.0

Copyright (c) 1982, 2018, Oracle.  All rights reserved.


Connected to:
Oracle Database 18c Enterprise Edition Release 18.0.0.0.0 - Production
Version 18.3.0.0.0

SQL>

Only a user authenticated AS SYSASM/SYSDBA to create the user.

How to List All Tables, Describe in Oracle, MySQL, DB2 and PostgreSQL

 In this tutorial, We will learn how to connect, list all tables in Oracle, MySQL, DB2, PostgreSQL and describe tables in Oracle,  MySQL, DB2 and PostgreSQL.

oracle and mysql all_tables examples

show all tables MySQL, show all tables in oracle, show all tables Postgres, show all tables, show all tables in database SQL, show all tables SQLite, show all tables in a database, show all tables in Cassandra, show all tables in hive, show all tables in schema Postgres, show all tables SQL, show all tables and columns MySQL

 You often want to list all tables in a database or list columns in a table. Obviously, every database has its own syntax to list the tables and columns. Well, this post placed all most popular databases.