Solidify Oracle RMAN with Oracle Sun Storage 7000 Unified Storage Systems

1Orhan BIYIKLIOGLU feat Husnu SENSOY

Solidify Oracle RMAN with Oracle Sun Storage 7000 Unified Storage SystemsOrhan Bıyıklıoğ[email protected]

System ArchitectTURKCELL Communication Services

Hüsnü Ş[email protected]

Founder & VLDB ExpertGlobal MaksimumData & Information Technologies

Orhan BIYIKLIOGLU feat Husnu SENSOY 2

Who are we ?Orhan Bıyıklıoğlu Hüsnü Şensoy

• Oracle Development & DBA experience over 6 years.

• Oracle DBA of the Year 2009.

• on BI.• ORACLE Exadata v2

experience over 120 TB of customer data.

• UNIX/Linux experience over 10 years.

• Certified Engineer.

• Member of the systems administration team responsible with more than 2000 UNIX servers.


Agenda Unified Storage Systems

101 Solutions to Database

B&R Challenges using Unified Storage Systems.

Unified Storage Best Practices for B&R.

Sample Designs using Unified Storage Systems

Conclusion


Solidify Oracle RMAN with Oracle Sun Storage 7000 Unified Storage SystemsUnified Storage Systems 101


Line of Unified Storage Systems

Sun Storage 7110 1 socket Up to 8GB RAM 14x SAS 10K RPM Drives 2 TB or 4.2 TB Only 2U

Sun Storage 7310 2 / 4 sockets Up to 64 GB / 128 GB RAM Up to 192 TB raw storage Up to 600 GB / 1.2 TB SSD

Read Flash Accelerator (SSD)

Write Flash Accelerator option (SSD)

Hybrid Storage Pool I/O Acceleration

Sun Storage 7410 4 / 8 sockets Up to 256 GB / 512 GB RAM Up to 576 TB raw storage Up to 600 GB / 1.2 TB SSD Read

Flash Accelerator (SSD) Write Flash Accelerator option

(SSD) Hybrid Storage Pool I/O

Acceleration


Open Storage 7000 Series Architectural Overview

Application

ZFS Hybrid Storage Pool

ZIL L2ARC Pool

Write SSDs Read SSDs HDDs


Analytics


Solidify Oracle RMAN with Oracle Sun Storage 7000 Unified Storage Systems

Solutions to Database B&R Challenges using Unified Storage Systems


Database Backup & Recovery Challenges of Today

No compression option for image backups available in RMANNo storage conservative way to store multiple copies of same data item in RMAN.Host interference in tiering to ternary storage.Full/Partial replication of multiple databases using same backup.Restore need of base backup in case of an erroneous recovery during point in time recovery.Replication of disk backup to remote destination.


RecoveryImage backup/Backupset Level 0 #

1#2

#3

#4

One Week Ago Three Days Before

Now

Recovery Range

run {RESTORE DATABASE FROM TAG WEEKLY_FULL_BCKP;

}

run {[SET UNTIL SCN x|SEQUENCE x|TIME ‘x’]RECOVER DATABASE FROM TAG DAILY_INC_BCKP;

}


Incremental Recovery of Datafile Image Copies

One Week Ago

Image Backup #1

#2

#3

#4

#5

#6

#7

Faster recovery due to minimized incremental applies.

Image copies can’t benefit from RMAN binary compressionNo way to go back more than a day

Adv

anta

ge

Disadvantage


Unified Storage Systems can Compress your Image Backups

RMAN Compression

ZFS Compression


Sample ZFS & RMAN Compression Ratios

None LOW MEDIUM0

20

40

60

80

100

120100

37.2630.64

None LZJB GZIP-1

GZIP-4

GZIP-9

0

20

40

60

80

100

120100

50.25

31.7529.4127.70


Design for Different Recovery Ranges

Image #1 #1

#2

#3

#4

One Week Ago

Last Night

Now

One Month Ago Two Weeks Ago

#5

#6

#7

#8

#9

#30…#1

0#11

#12

#13

#14

#15

Image #2 #8

#9

#30…#1

0#11

#12

#13

#14

#15

Image #3 #30…

Image #4 #30


Unified Storage Systemscan Deduplicate your backups• Assume a database

of size 10 TB• Daily change rate

of 500 GB• 4x10 TB image

backups• (30+23+15+1)x50

0 GB incremental backups

• 75 TB of backup storage


How do we move disk backup to Tape ?

DatabaseHost

Open Storage

7000

Ternary Storage

• RMAN will build a logical channel between Open Storage 7000 to ternary storage

• This cause• CPU consuption on database host• HBA utilization on database host• NIC utilization on databse host

BackupHost

Open Storage

7000

Snapshot

DatabaseHost

NFS

Ternary

Storage

NDMP


Clone Database• It was always a

hard issue to clone a database before 11g.

• Active Database Duplication makes it impressively easier in terms of configuration.

• But it is still a time consuming event.


Create Clone Databases Instantly with Unified Storage Systems

1. Create a readonly snapshot2. Make it read & write clone3. Expose those clones to

clone host over NFS4. Do classical database

recovery

Open Storage7000

FRA INC OTHR

Controlfile Autobacku

pArchivelog

s

Incremental

Backupsets

Image Copies

Clone Database

Host


Point in Time Recovery• Did you ever rollback a single database tablespace

to get a previous state of a table before an erroneous update operation ?

• How do you decide on parameter for UNTIL clause ?• What if you make a wrong decision ?

Image Backup #1

#2

Bad transaction SCN

Image Backup #1

#2

#3

#4

Older version than you need

Bad transaction is already applied


Unified Storage Systems allow you to play with UNTIL clause

1. Create a readonly snapshot2. Make it read & write clone3. Expose those clones to clone host

over NFS4. Do classical database recovery5. Check the data6. If there seems to be a problem

return to step 1

Open Storage7000

FRA INC OTHR


pArchivelog

s

Incremental

Backupsets

Image Copies

Clone Database

Host


Easy Replication with Unified Storage Systems

DatabaseHost

Open Storage

7000

Open Storage

7000

Remote HostRemote

HostRemote HostRemote

Host

WAN

Ternary

Storage


Solidify Oracle RMAN with Oracle Sun Storage 7000 Unified Storage Systems

Unified Storage Best Practices for Backup & Recovery


Unified Storage Systems Performance• Use IB or 10 Gbit network fabric to access unified

storage systems.

• Remember that current bottleneck on Unified Storage Systems is PCIe 1.0 I/O interconnects.

• Refer to followings for more performance details on Unified Storage Systems.• Link 1• Link 2

Workload RDBMA IPoIBNFS Streaming Read

2.11 GB/s

1.47 GB/s

NFS Streaming Write

984 MB/s 753 MB/s

http://blogs.sun.com/cindi/entry/infiniband_performance_limits_streaming_disk

http://blogs.sun.com/brendan/entry/7410_hardware_update_and_analyzing


Unified Storage SystemsPerformance Best Practices• Choose 64K/128K blocksize for your

• Image copy• Backupset• archivelogs

• Remember that dedup and compression options for shares are CPU demanding operations. Don’t use them unless you need them.

• Use RMAN compression whenever possible unless you have a host CPU bottleneck because it will increase you effective write speed.• 11g Release 2 : LOW or MEDIUM• 11g Release 1 : LZIB

• Don’t use fast recovery with SWITCH option• Unless your production storage has a comparable performance with unified

storage systems• For fully parallelise the backup of BIGFILE datafiles use SECTION

option with 11g Release 1.1 2 4 8 12 160.00

1000.00

2000.00

3000.00

4000.00

5000.00

6000.00

7000.00

Copy Backupset BZIP2 ZLIB

DOP

Seco

nds


Unified Storage SystemsConfiguration/Administration Best Practices

• Design multiple shares differentiated depending on your need.

• You can asynchronously move your backups to tape drivers from unified storage systems• But since those backup copies will require a restore from

tape before database restore or SWITCH operation.• In case of a conflict with routine backup activity, use read-

only snapshots as tape copy source.• Cleanup unnecessary snapshots & clones.


Solution

RMAN Restore & Recovery

Share Configurati

on

RMAN Backup

Sample Designs using Unified Storage SystemsSolidify Oracle RMAN with Oracle Sun Storage 7000 Unified Storage Systems


Basic Solution• A system already running on NFS or another storage with a comparable performance.• A single disk copy is sufficient.• Quick recovery from failure is neccessary in case of a primary storage loss.• Database size very small with compared to Unified Storage Systems pool size.

Open Storage7000

FRA


pArchivelog

s

Incremental

Backupsets

Image Copie

s

ALTER SYSTEM SET DB_RECOVERY_DEST=‘/export/fra’;

RUN { RECOVER COPY OF DATABASE WITH TAG ‘DAILY_BACKUP'; BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG ‘DAILY_BACKUP‘ DATABASE;

}

RUN { ALTER DATABASE MOUNT;SWITCH DATABASE TO COPY;RECOVER DATABASE;ALTER DATABASE OPEN;

}


Advanced Solution

• Quick recovery using SWITCH is not an option

• Two recovery capabilities are necessary• To Just now• To somewhere in last week

• Unified Storage Systems pool is at comparable size with production size.

Open Storage7000

FRA

Image Copies

INC

Incremental

Backupsets

ARCH

Archivelogs

LZJB

DEDUP

LZJB

ALTER SYSTEM SET DB_RECOVERY_DEST=‘/export/fra’;

RUN { RECOVER COPY OF DATABASE WITH TAG ‘DAILY_BACKUP'; BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG ‘DAILY_BACKUP‘ DATABASE TO DESTINATION ‘/export/inc’;

}

RUN { ALTER DATABASE MOUNT;RESTORE DATABASE FROM TAG ‘DAILY_BACKUP’RECOVER DATABASE;ALTER DATABASE OPEN;

}

RUN {SET COMPRESSION ALGORITHM ‘MEDIUM’;RECOVER COPY OF DATABASE WITH TAG ‘WEEKLY_BACKUP‘ UNTIL TIME ‘SYSDATE-7’; BACKUP AS COMPRESSED BACKUPSET INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG ‘WEEKLY_BACKUP‘ DATABASE TO DESTINATION ‘/export/inc’;

}


Solidify Oracle RMAN with Oracle Sun Storage 7000 Unified Storage SystemsConclusion


To Sum Up• Oracle 7000 Unified Storage Systems based on• Commodity Hardware• ZFS• Analyticsis a strong product that will solidfy your RMAN backup & recovery routines.

• You can start testing Unified Storage Systems capabilities by downloading VirtualBox & Oracle’s Sun Unified Storage Simulator

• Unconference session Unified Storage Systems• On Monday the 20th from 4-5pm I• In Mason room @ the Hotel Parc 55 (55 Cyril Magnin Street,

SF).

http://www.virtualbox.org/

http://www.oracle.com/webapps/dialogue/dlgpage.jsp?p_ext=Y&p_dlg_id=8588618&src=6870265&Act=7


Thank You…

Orhan Bıyıklıoğ[email protected]

System ArchitectTURKCELL Communication Services

Hüsnü Ş[email protected]

Founder & VLDB ExpertGlobal MaksimumData & Information Technologies

Documents

Solidify Oracle RMAN with Oracle Sun Storage 7000 Unified Storage Systems