Oracle Database Amazon AWSon... · 2018-06-01 · Choosing The Right Solution Oracle on Amazon EC2 You need full control over the DB instances ... A web service that makes it easier

Oracle Database

Amazon AWS

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Atul KumarOracle ACE & Author

Rajeev KCloud Expert

Atul Kumar

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Rajeev.K

➢ Expert in Oracle Database & Cloud

➢ 12+ Years Experience Managing Team of 25+

➢ Based in USA working with top Consultancy

➢ Trained 300+ trainees and 30+ corporate clients

➢ Oracle Certified Professional


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Kirti JainIDAM ExpertAtul Kumar

Oracle ACE & Author

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Getting Help


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Agenda: Module

➢ Overview: Oracle Database on Amazon (AWS)

➢ Amazon RDS for Oracle

➢ Provisioning RDS Instance

➢ RDS Key Feature

➢ Managing an Oracle RDS Instance

➢ DBA System Tasks

➢ DBA Database Tasks

➢ DBA Log Tasks

➢ DBA Miscellaneous Tasks


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Overview

Oracle Database on Amazon AWS


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Overview: Oracle DB on AWS

➢ Terminology

➢ AWS stands for Amazon Web Services

➢ EC2 stands for Elastic Compute Cloud

➢ S3 stands for Simple Storage Service

➢ Amazon offers two options for running Oracle Database on AWS

➢ Amazon Relational Database Service (Amazon RDS) for Oracle which is a

managed database service that helps simplify the provisioning and

management of Oracle Database

➢ Running a self-managed Oracle Database directly on Amazon Elastic Compute

Cloud (Amazon EC2)


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AWS To Use When Deploying Oracle


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Hosting Databases On-Premise


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Hosting Databases In Amazon EC2


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Amazon RDS for Oracle


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Hosting Databases On Amazon RDS


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➢ AWS recommends RDS first

➢ Focus on tasks that bring value

to your business

➢ Focus on high level tuning

tasks and schema optimization

➢ Lack of in-house expertise

managing databases

Choosing The Right Solution

➢ Oracle on Amazon EC2

➢ You need full control over the DB

instances

➢ Control over backups, replication

➢ and clustering

➢ Use features and options not

available in Amazon RDS

➢ Size and performance needs exceed

Amazon RDS offering


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➢ A web service that makes it easier to set up, operate, and scale a relational

database in the cloud

➢ Amazon RDS manages backups, software patching, automatic failure detection,

and recovery

➢ Amazon RDS doesn't provide shell access to DB instances, and it restricts

access to certain system procedures and tables that require advanced privileges

➢ In addition to the security in your database package, you can help control who

can access your RDS databases by using AWS Identity and Access Management

(IAM) to define users and permissions

➢ You can also help protect your databases by putting them in a virtual private

cloud.

Amazon RDS For Oracle


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Provisioning RDS Instance


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➢ Select Oracle Database Edition

➢ Choose Instance Class

➢ Specify Database Details

➢ Configure Advanced Settings

➢ You are Done

Create RDS Instance For Oracle


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RDS Key Features

➢ Scaling Compute & Storage


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RDS Key Features: Scale Up

➢ Scaling Compute & Storage


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RDS Key Features: HA


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RDS Key Features: Backup & Patch

➢ Backup & Patches

➢ Automated or manual backups

➢ Restore any backup to a point in time

➢ Automated patch management


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RDS Key Features: DR

➢ Disaster Recovery (DR)

➢ Cross-region snapshot copy for greater durability & ease of migration

➢ Copy a database snapshot to a different AWS Region

➢ Restore in the case of a regional disaster

➢ Or use it to migrate a database to a different region


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RDS Key Features: DR

➢ Replicate Data Across Regions to have a warm standby ready to fail over to

➢ AWS Database Migration Service

➢ Oracle GoldenGate


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RDS Key Features: Security

➢ A security group controls the access to a DB instance

➢ Allowing access to IP address ranges or Amazon EC2 instances that you

specify

➢ Amazon RDS uses DB security groups, VPC security groups, and EC2

security groups

➢ A DB security group controls access to EC2-Classic DB instances that are

not in a VPC

➢ A VPC security group controls access to DB instances and EC2 instances

inside a VPC

➢ An EC2 security group controls access to an EC2 instance


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Managing an Oracle RDS Instance


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Managing an Oracle RDS Instance

➢ Common DBA Tasks for Oracle DB Instances



➢ DBA Log Tasks



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DBA Tasks for Instance

➢ Changing the Global Name of a Database

➢ Creating and Sizing Tablespaces

➢ Setting the Default Tablespace

➢ Checkpointing the Database

➢ Setting the Database Time Zone

➢ Working with Oracle External Tables

➢ Validating DB Instance Files


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➢ Killing a session

➢ Traditional Approach

➢ alter system kill session ‘ sid, serial#’ IMMEDIATE;

➢ RDS Approach

➢ You can’t invoke the “alter system” command in RDS

➢ You have to use the utilities provided by the RDS ( rdsadmin.rdsadmin_util)

➢ exec rdsadmin.rdsadmin_util.kill(sid, serial#);

➢ Flushing the Shared Pool

➢ Traditional Approach

➢ alter system flush shared_pool;

➢ RDS Approach

➢ exec rdsadmin.rdsadmin_util.flush_shared_pool;www.k21academy.com/joincloud © Copyright 2018 | K21 Academy | All Rights Reserved

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➢ Changing the Global Name of a Database


➢ Setting the Default Tablespace


➢ Setting the Database Time Zone


➢ Validating DB Instance Files


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➢ Amazon RDS only supports Oracle Managed Files (OMF) for data files, log

files and control files

➢ When you create data files and log files, you can't specify the physical file

names

➢ create tablespace users2 datafile size 1G autoextend on maxsize 10G;

➢ create temporary tablespace temp01;

➢ alter tablespace users2 resize 200M;

➢ alter tablespace users2 add datafile size 100000M autoextend on next

250m maxsize UNLIMITED;


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➢ Setting the Default Temporary Tablespace

➢ Traditional Approach:

➢ ALTER DATABASE DEFAULT TEMPORARY TABLESPACE temp01

➢ RDS Approach:

➢ exec

rdsadmin.rdsadmin_util.alter_default_temp_tablespace(tablespace_na

me => 'temp01');


➢ Use the Amazon RDS procedure rdsadmin.rdsadmin_util.checkpoint to

checkpoint the database

➢ exec rdsadmin.rdsadmin_util.checkpoint;


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➢ You can store external table files in directory objects

➢ Create a directory object, or use one that is predefined in the Oracle

database, such as the DATA_PUMP_DIR directory

➢ You can query the ALL_DIRECTORIES view to list the directory objects for

your Amazon RDS Oracle DB instance

➢ Directory objects point to the main data storage space (Amazon EBS

volume) used by your instance

➢ The space used along with data files, redo logs, audit, trace, and other

files counts against allocated storage


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➢ Working with Oracle External Tables➢ Use case: Move data that is in an Amazon RDS Oracle DB instance into an

external data file

➢ Populate the external data file by creating an external table and selecting the

data from the table in the databaseCREATE TABLE orders_xt

ORGANIZATION EXTERNAL

(

TYPE ORACLE_DATAPUMP

DEFAULT DIRECTORY DATA_PUMP_DIR

LOCATION ('orders_xt.dmp')

)

AS SELECT * FROM orders;

➢ Data is populated in the orders_xt.dmp file in the DATA_PUMP_DIR directory


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DBA Log Tasks

➢ Setting Force Logging

➢ Setting Supplemental Logging

➢ Switching Online Log Files

➢ Adding and Dropping Online Redo Logs

➢ Resizing Online Redo Logs


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DBA Log Tasks

➢ Switching Online Log Files➢ exec rdsadmin.rdsadmin_util.switch_logfile;

➢ Adding Online Redo Logs➢ exec rdsadmin.rdsadmin_util.add_logfile(p_size => '100M');

➢ Dropping Online Redo Logs➢ exec rdsadmin.rdsadmin_util.drop_logfile(grp => 3);

➢ Retaining Archived Redo Logsbegin

rdsadmin.rdsadmin_util.set_configuration(

name => 'archivelog retention hours',

value => '24’);

end;

/


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DBA Log Tasks

Log Type Retention Schedule

Alert Logs The text alert log is rotated daily with 30 day retention managed by Amazon RDS. The

XML alert log is retained for at least 7 days and can be accessed using

the ALERTLOG view.

Audit Files The default retention period for audit files is 7 days. Amazon RDS may delete audit files

older than 7 days.

Trace files The default retention period for trace files is 7 days. Amazon RDS may delete trace files

older than 7 days.


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DBA Miscellaneous Tasks

➢ Manage Oracle Directories

➢ Manage and operate on database parameter file

➢ Enable database options like SPATIAL, EM Express, TDE etc

➢ Monitoring AWS RDS Instances


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Manage Oracle Directories

➢ Create New Directories in the Main Data Storage Space

➢ exec rdsadmin.rdsadmin_util.create_directory(p_directory_name => 'product_descriptions’);

➢ select DIRECTORY_PATH from DBA_DIRECTORIES where DIRECTORY_NAME =

'product_descriptions';

➢ Listing Files in a DB Instance Directory

➢ select * from table (rdsadmin.rds_file_util.listdir(p_directory => 'product_descriptions'));

➢ Reading Files in a DB Instance Directory

➢ select * from table (rdsadmin.rds_file_util.read_text_file( p_directory =>

'product_descriptions', p_filename => 'rice.txt'));


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Manage & Operate DB Param File

➢ How to change DB parameters in Amazon RDS using AWS Management

Console

➢ In order to Change a DB parameter on Amazon RDS, you must use a "Parameter

Group“

➢ A Parameter Group is a set of parameters identified by a name

➢ A "Parameter Group" can be shared with several Oracle Database Instances

➢ Amazon allows you to create only one single group and to re-use that group

across several database instances

➢ Implement standardized databases

➢ You can have a Parameter Group for all your Dev databases, another

Parameter Group for all your Test Databases, and so on


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Manage & Operate DB param file


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➢ How to change DB parameters in Amazon RDS using AWS Management

Console

➢ At the time of the creation Amazon will assign a default Parameter Group usually

called "default.oracle-ee-12.1

➢ The default Parameter Group cannot be modified; You cannot change the value

of any parameter inside that default one

➢ You should create a new Parameter Group any time after the database creation

to change the parameter file

➢ AWS Management Console -> Parameter Groups and click on Button

"Create Parameter Group"


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Enable Database Options & Features

➢ Option Groups

➢ Amazon RDS uses option groups to

enable and configure database features

listed below

➢ Oracle Application Express

➢ Oracle Enterprise Manager

➢ Oracle Label Security

➢ Oracle Locator

➢ Oracle Multimedia

➢ Oracle Native Network Encryption

➢ Oracle SQLT

➢Oracle SSL

➢Oracle Spatial

➢Oracle Statspack

➢Oracle Time Zone

➢Oracle Transparent

Data Encryption

➢Oracle UTL_MAIL

➢UTL_MAIL

➢Oracle XML DB


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➢ Working with Option Groups

➢ Amazon RDS uses option groups to enable and configure features

➢ An option group can specify features, called options, that are available for a

particular Amazon RDS DB instance

➢ Options can have settings that specify how the option works

➢ RDS provides an empty default option group for each new DB instance

➢ You cannot modify this default option group

➢ To apply an option to a DB instance, you must do the following:

➢ Create a new option group, or copy or modify an existing option group

➢ Add one or more options to the option group

➢ Associate the option group with the DB instance


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➢ Enable EM Express

➢ Amazon RDS supports Oracle Enterprise Manager (OEM) Database

Express through the use of the OEM option

➢ OEM enabled database is not supported on the following DB instance

classes: db.t2.micro, db.t2.small, db.m1.small

➢ To add the OEM option to a DB instance:

➢ Determine the option group you want to use (You can create a new option

group or use an existing option group)

➢ Add the OEM option to the option group, and configure the option settings


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➢ Apply the option group to a new or existing DB instance

➢ After you enable the OEM option, you can begin using the OEM Database

tool from your web browser

➢ https://mydb.f9rbfa893tft.us-east-1.rds.amazonaws.com:5500/em

Note: mydb.f9rbfa893tft.us-east-1.rds.amazonaws.com is the endpoint for

your Amazon RDS DB instance with OEM port as 5500


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Monitoring Amazon RDS

➢ Amazon RDS Events: Notifies when changes occur with a DB instance, DB cluster, DB

snapshot, DB cluster snapshot, DB parameter group, or DB security group.

➢ Database log files: View, download, or watch database log files using the Amazon

RDS console or Amazon RDS API actions. You can also query some database log files

that are loaded into database tables.

➢ Amazon RDS Enhanced Monitoring: Look at metrics in real time for the operating

system that your DB instance or DB cluster runs on


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Monitoring Amazon RDS

➢ Amazon CloudWatch for additional monitoring capabilities

➢ RDS automatically sends metrics to CloudWatch every minute for each

active database instance

➢ Amazon CloudWatch Alarms to watch a metric over a specific time period,

and perform one or more actions based on the value of the metric relative

to a threshold you set


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Summary

➢ Overview: Oracle database on Amazon Web Services


➢ Provisioning RDB instance

➢ RDS Key Feature

➢ Managing an Oracle RDS Instance



➢ DBA Log Tasks



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Documents

Oracle Database Amazon AWSon... · 2018-06-01 · Choosing The Right Solution Oracle on Amazon EC2 You need full control over the DB instances ... A web service that makes it easier