Uzstāsies: Jurix, DBACC Tēma: Migration challenges and Migration process from IBM AIX to Oracle Solaris Valoda: Latviešu Tēmas apraksts: Šajā prezentācijā pastāstīšu par savu pieredzi organizējot klienta datubāzes migrāciju uz Oracle SPARC SuperCluster. Uzdevums ir nomigrēt datubāzi no IBM AIX uz Oracle Solaris. Aprakstīšu dažus migrācijas variantus, kurus izskatījām, kā arī problēmas, kuras sagaidīja procesā.

1. Migration Challenges and Process
from IBM AIX
to Oracle Solaris on SPARC SuperCluster
Juris Trošins
juris.trosins@dbacc.lv
www.dbacc.lv

2. Who Am I
• More than third of my life with Oracle tech
• OCE, OCP, OCM
• Co-founder of DBA Competence Center Ltd.
• Delivering Oracle University training courses
• Frequent speaker at LVOUG, UKOUG, Harmony
and other technology seminars

3. What We Do
• DBA Outsourcing
• Remote consulting
• Oracle Software
• Oracle Hardware
• Oracle Education

4. Agenda
• What is Oracle SPARC SuperCluster
• SuperCluster architecture
• Migration challenges
• Migration process

5. Oracle Engeneered Systems

6. Oracle SPARC SuperCluster
SuperCluster
SuperCluster T5-8
Half Rack Full Rack
Processors 8 16
Memory 2TB 4TB
Exadata Storage Servers 4 8
• Runs SPARC Solaris 10/11
• Oracle VM for SPARC (ldoms
and zones)

7. SuperCluster Half-Rack
• 2 x SPARC T5-8 (128 cores, 2TB memory)
• Each T5-8 configured with:
– 4 x SPARC T5 processors, 64 cores
– 1 TB memory
– 4 x InfiniBand HCAs (dual port)
– 4 x 10GbE NICs (dual port)
– 8 x 900GB SAS disks
– Optional Fiber channel cards
– 1-4 Domains

8. SuperCluster Half-Rack
• Storage
– 4 Exadata Storage Servers (192TB HC or 57.6 TB HP disks)
– ZS3-ES (80 TB disk and 292 GB write-optimized SSD)
• Switches
– 3 x InfiniBand 36 port switches
– GbE Management switch

9. Half-Rack Configurations

10. Full-Rack Configurations

11. Customer Challenges
• Existing infrastructure
– First migratable database – 2TB, 24x7, OLTP type
– Platform is IBM P7, virtualized with LPARs
– Application servers run on «some» virtualization
• Goals
– Switch to unified platform
– Consolidate databases and application servers
– Keep critical database workload isolated to ensure
availability
– Boost performance
– Ease management overhead

12. Migration Project

13. Migration Project

14. Migration Challenges
• Switch from IBM AIX to Oracle Solaris
• Upgrade existing databases
• Minimize downtime
• Consolidate application servers to Weblogic
• Extend competency to new technology

15. Migration Options
• Full expdp/impdp
• DataGuard
• Cross-platform duplicate
• Transportable database
• Various replicataion cases (streams,GG)
• Incrementally updatable transportable
tablespaces

16. Full Expdp/Impdp
• Export to dump and import from dump takes
too long time
• One LOB takes ~30% of database size
• Possible to split data into several network
import streams, import LONG separately
• Possible to split LOB by rowid ranges
• Still takes too long
• Solution is complicated and not error prone

17. DataGuard
• Data Guard Support for Heterogeneous
Primary and Physical Standbys in Same Data
Guard Configuration (Doc ID 413484.1)
• AIX <-> Solaris not supported due to BUG
12702521 (controlfile incompatibility)

18. Cross-Platform Duplicate
• RMAN DUPLICATE/RESTORE/RECOVER Mixed
Platform Support (Doc ID 1079563.1)
• Works only for certain combinations
– Solaris x86-64 <-> Linux x86-64
– HP-UX PARISC <-> HP-UX Itanium
– Win Itanium <-> Win x86-64

19. Transportable Database
• Source DB must be opened read-only
• Downtime takes too long

20. Replication
• Old datatypes
• Complicated process

21. TTS
• Main preparation done with source DB
accessible
• All restrictions of TTS approach apply
• Estimated downtime promises to be
~45minutes

22. TTS
• Initial full backup:
backup for transport allow
inconsistent incremental level 0
tablespace <list of tablespaces>
format ‘<place of backup’;

23. Backup
• Subsequent incremental backups:
backup for transport allow
inconsistent incremental level 1
tablespace <list of tbs> format
‘<backup dest>’;
• Or with SCN
backup for transport allow
inconsistent incremental from scn
<scn before last bckp> tablespace
<list of tbs> format ‘<backup dest>’;

24. Restore
• Restore full backup
restore from platform 'AIX-Based Systems
(64-bit)' foreign datafile <file list>
format ‘<dest>' from backupset ‘<bset
name>’;
• Roll forward restored files
recover from platform 'AIX-Based Systems
(64-bit)' foreign datafilecopy
‘<list of files>’
from backupset
‘<bset name>';

25. Final backup
• Place tablespaces in read-only mode
• Take final backup and TTS expdp dump
backup for transport incremental
level 1 tablespace <tablespaces>
format ‘<backup dest>' datapump
format '<backup dest>';
• Downtime starts NOW!

26. Final restore
• Apply final incremental level 1 backup to datafiles
• Restore TTS dump
restore from platform 'AIX-Based Systems
(64-bit)' dump file ‘<dump name>'
datapump destination ‘<where to restore>'
from backupset '<backupset name>’;
• Import TTS dump
• Place tablespaces read-write
• Downtime ends NOW!

27. Q/A
@juristrosins
juris.trosins@dbacc.lv
(+371) 29 427247
www.dbacc.lv