managing a multi-platform environment

EMBARCADERO TECHNOLOGIESEMBARCADERO TECHNOLOGIES

Managing a Multi-Platform Environment

Joey D’Antoni

June 17th, 2015

EMBARCADERO TECHNOLOGIES

Joey D’Antoni• Joey has over 15 years of experience with a wide variety of data platforms, in

both Fortune 50 companies as well as smaller organizations

• He is a frequent speaker on database administration, big data, and career management

• He is the co-president of the Philadelphia SQL Server User’s Group

• MSCE, Business Intelligence, Data Platform

• He wants you to make sure you can restore your data

Joeydantoni.com


Agenda

Complexities of Multi-Platform Environment

Oracle and SQL Server—Compare and Contrast

Shortcuts to Learning and Assisting

3


Challenges—Multi-Platform

Twice as Many Operating Systems

Twice as Many RDBMSs

A tenth of the available DBAs

4


Operating Systems

Generally speaking—Oracle > Linux

SQL Server = Windows

5


Finding a DBA

This is the most challenging part

Crossover is uncommon

Training from within is good

Tools Can Help Ease Transition

6


Oracle and SQL Server—Compare and Contrast

Licensing

Physical Layout

Memory Structures

Languages

Accessories and Tools

7


Licensing

Microsoft SQL Server

Licensed by the core (enterprise edition)

Virtualization and HA/DR requires software assurance

All features are included

Development and HA/DR can be licensed cheaply or free

OracleLicensed by the core (enterprise edition)—type of core matters

HA/DR require licenses

Patches require support

Most features (compression, partitioning, performance pack) are extra costs

Development and HA/DR is fully licensed

8


Oracle Physical Architecture

9

System Tablespace

SysAux Tablespace

Undo Tablespace

Temp Tablespace

User Tablespace(s)

Rollback Segments

Smon

PMON

CKPT

ARCH

RECO


Oracle Terms for SQL DBAs

Database = Datafiles

Instance = Datafiles + Processes

Undo = Uncommitted transaction space

Redo Logs = Transaction Logs

Archived Redo Logs=Transaction Log Backups

10


SQL Server Physical Architecture

11

SQLServer.Exe

Master

MSDB

TempDB

Transaction Logs

User DBs


SQL Server Terms for Oracle DBAs

Database = Schema + Tablespace

Instance=Instance

Transaction Logs = Redo + Undo

Master Database = System Tablespace

MSDB ~= Sysaux Tablespace

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Memory Structures

Oracle

SGA—Main Database Memory

• Library Cache—Plan Cache

• Shared Pool

• Large Pool

• Buffer Pool

PGA—Process and User Memory

SQL Server

One memory setting

Buffer Cache

Procedure Cache

Other internal pools

13


Languages

PL/SQL

Can be complex fully featured procedure language

(IMO)DBAs don’t code as much PL/SQL as SQL DBAs

Can nest procedures in packages

T-SQL

Just a query language

Extended to support database operations

Some procedural and looping logic, not as robust as PL/SQL

14


Maintenance

Oracle

Backups and Restores—RMAN

Logical Backup—EXPDP/IMPDP

Index Maintenance—Not as much

Stats—Built-in, but write your own

SQL Server

Backup and Restore—Built-in to instance/SQL Agent

Index Maintenance—Must do regularly

Stats--Similar

15


Oracle Backup and Restore

RMAN

• Powerful tool, for backup and restore

• Does everything SQL Server backup does and beyond

• Log File Management is different 16


Questions?

Please enter your questions in the GotoWebinar control panel located on the right side of your screen.

17


Thank you for attending!

Connect with us

18

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managing a multi-platform environment

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