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Exam Number : 1Z0-074
Exam Name : Upgrade Oracle DBA 11g or 12c to 12c R2
Vendor Name : Oracle
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1Z0-074 exam Format | 1Z0-074 Course Contents | 1Z0-074 Course Outline | 1Z0-074 exam Syllabus | 1Z0-074 exam Objectives
Oracle Database 12c Release 2 (12.2.0.1) includes new features and enhancements that
make it an attractive upgrade target for existing Oracle databases. Moving to Oracle Database
12c Release 2 may be part of an effort that includes moving to newly purchased server
hardware, migrating to different storage architectures such as Oracle Automatic Storage
Management, changing the database character set, migrating to a completely different
operating system, or migrating to the Oracle Cloud.
Because upgrade and migration scenarios can differ in many ways, Oracle provides multiple
methods for you to upgrade and migrate your databases to Oracle Database 12c Release 2.
This white paper outlines these upgrade and migration methods. You will learn about different
use cases and key factors to consider when choosing the method that best fits your
requirements.
Database Upgrade
The act of upgrading an Oracle database involves modifying the data dictionary to be compatible with a newer
version of Oracle database software. Typical actions that may be part of a database upgrade include:
» Adding, dropping, or modifying columns in system tables and views
» Creating new system packages or procedures
» Modifying existing system packages or procedures
» Creating, modifying, or dropping database users, roles, and privileges
» Modifying seed data that is used by Oracle database components
All of these actions affect the data dictionary of your database. They do not affect the data stored in your user or
application tablespaces. Therefore, the sheer volume of data stored in your Oracle database has little or no
bearing on a database upgrade.
Database Migration
The term “migration” applies to several different types of changes that can be applied to an Oracle database. In
addition to database version, these can include a change to any or all of the following:
» Computer server
» Storage architecture
» Character set
» Operating system
» Schema topology (changing the partitioning scheme)
» Encryption
» Compression
» Database architecture (moving from non-CDB to PDB)
Database migration differs from database upgrade in two important ways. First, database migration generally
involves moving or modifying the user and application data in the database. This means that the size of your
database has a dramatic impact on your database migration project. Second, any of the above migrations can be
performed on a database without upgrading it to a new version. This white paper will discuss techniques that can
be used to perform both an upgrade to Oracle Database 12c and a migration simultaneously
Multitenant Architecture
Oracle Database 12c introduced a new multitenant architecture. It enables an Oracle database to contain a
portable collection of schemas, schema objects, and nonschema objects that appears to an Oracle Net client as
a separate database. This self-contained collection is called a pluggable database (PDB). A multitenant container
database (CDB) is an Oracle database that includes
zero, one, or many user-created PDBs. This new
architecture enables customers to easily consolidate
multiple databases and introduces another very
important type of database migration for customers to
consider: migration to a PDB.
In some cases, migrating from traditional database
architecture (e.g. Oracle Database 11g) to a PDB can
be combined with other database upgrade or migration
tasks into a single operation. In other cases, migration
into a PDB may involve an additional step. The steps for
migrating an existing or non-CDB database to a PDB
will be described under each upgrade or migration
technique in this white paper.
Selecting a Database Upgrade or
Migration Method
With several upgrade and migrations available, choosing the best upgrade or migration method for a particular
project requires an analysis of several important project characteristics. Each of these characteristics can
influence the suitability of a given method when you upgrade or migrate to Oracle Database 12c:
» The version from which you are upgrading or migrating, down to the patch set level
» The source and destination operating system and version
» The source and destination hardware platforms and their endian characteristics
» Any plans to change the real data layout or format, such as changing the character set, partitioning,
encryption, or compression
» Availability requirements – the amount of downtime allowed for the upgrade or migration project
» The size of the database to be migrated
» Whether the destination of the upgrade is an Oracle Database 12c Release 2 PDB
There is no single upgrade or migration method that is the best option for all possible upgrade and migration
scenarios. However, there is a method that is best for any given scenario based on the above factors.
Direct Upgrade to Oracle Database 12c Release 2
A direct upgrade is one where either the Database Upgrade Assistant (DBUA) or command-line upgrade script is
used to upgrade your database to Oracle Database 12c. Direct upgrade is supported when the source database
is running one of the releases shown in the following table.
Oracle Database 12c: Admin, Install and Upgrade Accelerated
Oracle Database 12c: Administration Workshop
Oracle Database 12c: Backup and Recovery Workshop
Oracle Database 12c: Data Guard Administration
Oracle Database 12c: High Availability New Features
Oracle Database 12c: Install and Upgrade Workshop
Oracle Database 12c: Managing Multitenant Architecture
Oracle Database 12c: New Features for Administrators
Oracle Database 12c: Performance Management and Tuning
Oracle Database: SQL Tuning for Developers
Oracle Database 12c: Clusterware Administration
Oracle Database 12c: RAC Administration
Oracle Database 12c: Security
Exadata Database Machine: 12c Administration Workshop
Oracle GoldenGate 12c : Fundamentals for Oracle
A higher version or a release independent version of any listed course will fulfill the hands on training requirement.
All Oracle Database 12c R2 versions of these courses (if available) are also accepted
Courses can be instructor-led in-class (ILT), a live virtual class (LVC), training on demand (TOD), or Learning Subscription. Self-study courses (labeled as 'Self-Study' in the course format) are great preparation tools, but do not fulfill the training requirement. Course must be delivered by Oracle University Training Center, Oracle Authorized Education Center, Oracle Authorized Partner Oracle Academy or Oracle Workforce Development Program.
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