The document discusses a proof of concept (POC) for Exadata X5-2 with Oracle VM, highlighting a case study involving a medium-sized insurance company facing resource constraints. It compares the existing IBM AIX architecture with the Exadata solution, addressing performance improvements achieved during the POC execution through OLTP and Documentum workload processing. The results show significant execution time reductions, demonstrating the advantages of the Exadata X5-2 for optimizing database operations.

1. 2015© Trivadis
BASEL BERN BRUGG LAUSANNE ZUERICH DUESSELDORF FRANKFURT A.M. FREIBURG I.BR. HAMBURG KOPENHAGEN MUNICH STUTTGART VIENNA
2015 © Trivadis
Exadata x5-2 POC with OVM: how we won against IBM
Jacques Kostic
Senior Consultant IMS Lausanne
DOAG-19 Nov 2015
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2. 2015© Trivadis
About me…
 Senior Consultant, Trivadis AG, Lausanne-CH
 Experience
• Oracle DBA since more than 25 years, initially with version 4
• High Availability and Backup & Recovery
• SQL and Instance Performance & Tuning
• License Audit and Consolidation
 Teaching Courses at Trivadis
• Oracle Grid Infrastructure & RAC
• Oracle Data Guard
• Oracle SQL Performance & Tuning
• Oracle Instance Performance & Tuning
2
Exadata X5-2 POC with OVMExadata X5-2 POC with OVM
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3. 2015© Trivadis
Our company.
Exadata X5-2 POC with OVM
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Trivadis is a market leader in IT consulting, system integration, solution engineering
and the provision of IT services focusing on and technologies
in Switzerland, Germany, Austria and Denmark. We offer our services in the following
strategic business fields:
Trivadis Services takes over the interacting operation of your IT systems.
O P E R A T I O N

4. 2015© Trivadis
COPENHAGEN
MUNICH
LAUSANNE
BERN
ZURICH
BRUGG
GENEVA
HAMBURG
DÜSSELDORF
FRANKFURT
STUTTGART
FREIBURG
BASEL
VIENNA
With over 600 specialists and IT experts in your region.
Exadata X5-2 POC with OVM
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14 Trivadis branches and more than
600 employees
200 Service Level Agreements
Over 4,000 training participants
Research and development budget:
CHF 5.0 million
Financially self-supporting and
sustainably profitable
Experience from more than 1,900
projects per year at over 800
customers

5. 2015© Trivadis
AGENDA
1. Introduction
2. Current Oracle Architecture
3. Alternatives with Exadata X5-2
1. Without OVM
2. With OVM
4. POC execution and results
5. Proposed architecture
6. Five years projection plan
7. Q&A
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Introduction
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Customer Overview
The name will not be disclosed but the most relevant
characteristics to the project are reported below.
 Medium size customer from insurance sector
 Several databases with different workload types
 Lack of storage and resources with licensing constraints
 Consolidation opportunities with the new Exadata X5-2
 Very short time to run the POC (5 days!)
Customer
Environment
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Current Oracle architecture
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Current Oracle architecture
 IBM AIX P7 PowerVM technologies, 1 LPAR per instance on uncapped CPU POOL
 20 production Oracle instances
 60 dev, qa, int instances
 ~25TB PROD/DEV/QA/INT
 80 LPAR
 Max 700GB per database, generally OLTP workload except for Documentum
 Good SQL optimization for OLTP databases
 Licensed 20 CPU Enterprise Edition with Diagnostic and Tuning packs
 Uncapped CPU POOL is problematic for licensing compliance aspects
 However, CPU POOL usage charts are not showing pics above 12 CPU
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Alternatives with Exadata X5-2
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Exadata X5-2: Without OVM
Pros.
 Use the entire machine capacity
 Less servers to manage
 Pay-as-you-grow approach (COD) for software licensing is another way in which Exadata
helps to align costs with business growth
 Minimum 40% of the cores must be activated
 All additional options must follow the same allocation
Cons.
 Isolation between databases and environments
 License optimization
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Exadata X5-2: With OVM
Pros.
 Environment and database isolation
 Hard partitioning facilitate licensing optimization
 Minimum 40% of the total cores must be licensed for Enterprise Edition product
 For other options, it’s linked to CPU allocation for each VM
 One core per database node dedicated to dom0 (out of software licensing)
 Very flexible, dynamic vCPU allocation
 Allow IO resource management between all database from all virtual machines.
Db_unique_name must be unique across the entire Exadata
Cons.
 Might appear more complex to manage
 New feature on Exadata X5-2 (backported to X4)
 Strong investment from Oracle on the technology representing the key solution for global
consolidation projects
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Exadata X5-2: With OVM
data
fra
data
fra
data
fra
free
StorageServer1 StorageServer2 StorageServer3
HD1 HD2 HD3 HD4 HD5 HD6 HD1 HD2 HD3 HD4 HD5 HD6 HD1 HD2 HD3 HD4 HD5 HD6
DBServer1 (dom0 4 vCPUs)
vClu2
vClu1
vClu3
PROD1
PROD2
PROD3 PROD5 PROD6 PROD7
QAS1
QAS2
QAS3 QAS5
QAS6
QAS7
INT1
INT2 INT3 INT5
INT6
INT7
14 vCPUs14 vCPUs
14 vCPUs14 vCPUs
8 vCPUs8 vCPUs
IO Resource Manager: Category, Inter-Database, Intra-Database (db_unique_name unique across all VClusters)
PRD
QA
INT
2 Db Servers
36 cores per server
72 vCPUs per server
68 vCPUs available
DomU-1
DomU-2
DomU-3
DBServer2 (dom0 4 vCPUs)
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Exadata X5-2: OracleVM overview on Exadata
 Deployment
 Create configuration (clusters) with Oracle Exadata Deployment Assistant (OEDA)
Configuration tool
- OEDA Configuration tool version Mar 2015 v15.084 - Patch 20645646
 Prepare system
- IP allocation, customer requirements
 Deploy configuration using OEDA Configuration tool
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Exadata X5-2: Cluster deployment example
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POC Execution and Result
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POC Execution and Result
Environment
 Exadata 1/8
 OVM Configuration
 Two-node cluster with 26 vCPUs per node and 90 GB of RAM
 1 database 300 GB with 30 GB of SGA (OLTP)
 1 database of 700 GB with 30 GB of SGA (Documentum)
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POC Execution and Result: OLTP batch processing
Account validation batch on the OLTP database with 26 threads in parallel
*Test done with 26 vCPUs and 2 vCPUs, no differences on the execution time
Job P7 with DS8000 Exadata *Gain
Generate account validation
Preparation 2m 31s 45s 336%
Execution (28536 accounts) 2h 29m 41s 1h 17m 26s 192%
Summary generation
Execution (28536 accounts) 3h 19m 29s 2h 10m 4s 154%
Reporting
Preparation 1m 16s 48s 158%
Execution 13h 38m 45s 10h 05m 10s 135%
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POC Execution and Result: OLTP batch processing
AWR Extractions
Nothing to report!
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POC Execution and Result: Documentum
Execution time between 486 sec and 12,276 sec (average 1,226 sec)
select all doc.r_object_id, doc.a_content_type
from VFK_TST_DCTM.vfk_document_sp doc LEFT OUTER JOIN
VFK_TST_DCTM.dmi_0301d65580000206_sp ON
doc.r_object_id = dmi_0301d65580000206_sp.r_object_id
where
((doc.title!='office rendition error')
and (dmi_0301d65580000206_sp.c_status!='en traitement')
and doc.a_content_type in
('msw8', 'msw12', 'excel8book', 'excel12book', 'ppt12', 'ppt8', 'msg')
and not ( exists (select * from VFK_TST_DCTM.dmr_content_sp dmr_content
where (dmr_content.r_object_id in
(select r_object_id from VFK_TST_DCTM.dmr_content_r
where parent_id=doc.r_object_id)
and (dmr_content.full_format='pdf')
)
)
)
) and (doc.i_has_folder = 1 and doc.i_is_deleted = 0);
Query
Identify significant query
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POC Execution and Result: Documentum
Execution on production system:
----------------------------------------------------------------------------------
| Id | Operation | Name | E-Rows |
----------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | |
| 1 | NESTED LOOPS | | 499 |
| 2 | NESTED LOOPS | | 494 |
|* 3 | HASH JOIN ANTI | | 494 |
| 4 | INLIST ITERATOR | | |
|* 5 | TABLE ACCESS BY INDEX ROWID| DM_SYSOBJECT_S | 49392 |
|* 6 | INDEX RANGE SCAN | DM_SYSOBJECT_S_INDX20 | 49392 |
| 7 | VIEW | VW_SQ_1 | 31M|
| 8 | NESTED LOOPS | | 31M|
| 9 | TABLE ACCESS FULL | DMR_CONTENT_R | 69M|
|* 10 | INDEX RANGE SCAN | DMR_CONTENT_S_INDX01 | 1 |
|* 11 | INDEX UNIQUE SCAN | D_1F01D65580000924 | 1 |
|* 12 | INDEX RANGE SCAN | DMI_0301D65580000206_S_INDX06 | 1 |
----------------------------------------------------------------------------------
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2h30min!

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POC Execution and Result: Documentum
Execution on Exadata:
------------------------------------------------------------------------------
| Id | Operation | Name | E-Rows |
------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | |
| 1 | NESTED LOOPS | | |
| 2 | NESTED LOOPS | | 841 |
| 3 | NESTED LOOPS | | 831 |
|* 4 | HASH JOIN ANTI | | 831 |
| 5 | INLIST ITERATOR | | |
|* 6 | TABLE ACCESS BY INDEX ROWID | DM_SYSOBJECT_S | 83083 |
|* 7 | INDEX RANGE SCAN | DM_SYSOBJECT_S_INDX20 | 83084 |
| 8 | VIEW | VW_SQ_1 | 30M|
|* 9 | HASH JOIN | | 30M|
|* 10 | INDEX STORAGE FAST FULL SCAN| DMR_CONTENT_S_INDX01 | 27M|
| 11 | TABLE ACCESS STORAGE FULL | DMR_CONTENT_R | 67M|
|* 12 | INDEX UNIQUE SCAN | D_1F01D65580000924 | 1 |
|* 13 | INDEX UNIQUE SCAN | D_1F01D65580000908 | 1 |
|* 14 | TABLE ACCESS BY INDEX ROWID | DMI_0301D65580000206_S | 1 |
------------------------------------------------------------------------------
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1,21min!

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POC Execution and Result: Documentum
Different execution time
 2h30 min versus 1min 21sec
 Different execution plan
 Missing histograms in production on column PARENT_ID for table DMR_CONTENT_R
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POC Execution and Result: Documentum
Collect missing histograms:
On Exadata(just to have the elapse time)
Begin
dbms_stats.gather_table_stats (
ownname => 'VFK_TST_DCTM',
TABNAME => 'DMR_CONTENT_R',
METHOD_OPT => 'for all columns size skewonly');
End;
Elapsed: 00:01:49.905
En Prod
Begin
dbms_stats.gather_table_stats (
ownname => 'VFK_TST_DCTM',
TABNAME => 'DMR_CONTENT_R',
METHOD_OPT => 'for all columns size skewonly');
End;
Elapsed: 00:10:02.628
Factor of 5 on
the same
dataset!
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POC Execution and Result: Documentum
After having collected missing statistics, here is the result in Prod:
------------------------------------------------------------------------------
| Id | Operation | Name | E-Rows |
------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | |
| 1 | NESTED LOOPS | | |
| 2 | NESTED LOOPS | | 841 |
| 3 | NESTED LOOPS | | 831 |
|* 4 | HASH JOIN ANTI | | 831 |
| 5 | INLIST ITERATOR | | |
|* 6 | TABLE ACCESS BY INDEX ROWID | DM_SYSOBJECT_S | 83083 |
|* 7 | INDEX RANGE SCAN | DM_SYSOBJECT_S_INDX20 | 83084 |
| 8 | VIEW | VW_SQ_1 | 30M|
|* 9 | HASH JOIN | | 30M|
|* 10 | INDEX FAST FULL SCAN | DMR_CONTENT_S_INDX01 | 27M|
| 11 | TABLE ACCESS FULL | DMR_CONTENT_R | 67M|
|* 12 | INDEX UNIQUE SCAN | D_1F01D65580000924 | 1 |
|* 13 | INDEX UNIQUE SCAN | D_1F01D65580000908 | 1 |
|* 14 | TABLE ACCESS BY INDEX ROWID | DMI_0301D65580000206_S | 1 |
------------------------------------------------------------------------------
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12,57min!

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POC Execution and Result: Documentum
Same execution plan on Exadata for effective comparison:
optimizer_index_caching=0;
optimizer_index_cost_adj=100;
PROD  12 min 57 sec
Exadata  1 min 21 sec
Major improvement due to smart scan usage (storage clause)
------------------------------------------------------------------------------
| Id | Operation | Name | E-Rows |
------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | |
| 1 | NESTED LOOPS | | |
| 2 | NESTED LOOPS | | 841 |
| 3 | NESTED LOOPS | | 831 |
|* 4 | HASH JOIN ANTI | | 831 |
| 5 | INLIST ITERATOR | | |
|* 6 | TABLE ACCESS BY INDEX ROWID | DM_SYSOBJECT_S | 83083 |
|* 7 | INDEX RANGE SCAN | DM_SYSOBJECT_S_INDX20 | 83084 |
| 8 | VIEW | VW_SQ_1 | 30M|
|* 9 | HASH JOIN | | 30M|
|* 10 | INDEX STORAGE FAST FULL SCAN| DMR_CONTENT_S_INDX01 | 27M|
| 11 | TABLE ACCESS STORAGE FULL | DMR_CONTENT_R | 67M|
|* 12 | INDEX UNIQUE SCAN | D_1F01D65580000924 | 1 |
|* 13 | INDEX UNIQUE SCAN | D_1F01D65580000908 | 1 |
|* 14 | TABLE ACCESS BY INDEX ROWID | DMI_0301D65580000206_S | 1 |
------------------------------------------------------------------------------
Default optimizer settings
Factor 9 on the
same dataset
with the same
execution plan
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POC Execution and Result: Documentum
Change optimizer settings
optimizer_index_caching=95;
optimizer_index_cost_adj=5;
PROD  4 sec
Exadata  1 sec
Less gain as smart scan is not used
------------------------------------------------------------------------------------
| Id | Operation | Name | E-Rows |
------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | |
| 1 | NESTED LOOPS | | 4203 |
| 2 | NESTED LOOPS | | 4154 |
| 3 | INLIST ITERATOR | | |
|* 4 | TABLE ACCESS BY INDEX ROWID | DM_SYSOBJECT_S | 4154 |
|* 5 | INDEX RANGE SCAN | DM_SYSOBJECT_S_INDX20 | 4154 |
| 6 | NESTED LOOPS | | 1 |
| 7 | TABLE ACCESS BY INDEX ROWID| DMR_CONTENT_R | 2 |
|* 8 | INDEX RANGE SCAN | D_1F01D65580000005 | 2 |
|* 9 | INDEX RANGE SCAN | DMR_CONTENT_S_INDX01 | 1 |
|* 10 | INDEX UNIQUE SCAN | D_1F01D65580000924 | 1 |
|* 11 | INDEX RANGE SCAN | DMI_0301D65580000206_S_INDX04 | 1 |
------------------------------------------------------------------------------------
Factor 4 on the
same dataset
with the same
execution plan
Required by Documentum
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POC Execution and Result: Hardware tests
We were requested to remove one disk!
OEM Alarm
Host=sgexaadm02vm01.customer.ch
Target type=Cluster ASM
Target name=+ASM_cluster-clu1
Categories=Availability
Message=2 disks are offline.
Severity=Critical
Event report
ed time=Apr 15, 2015 10:17:05 AM CEST
Disk re-insert (rebuild)
Power Power Estd Estd
INST_ID GROUP_NUMBER Operation PASS State Reqtd Actual Work Min
---------- ------------ ---------- --------- ----- ----- ------ -------- -------
2 2 REBAL RESYNC RUN 50 50 31,413 13
2 2 REBAL RESILVER WAIT 50 50 0 0
2 2 REBAL REBALANCE WAIT 50 50 0 0
2 2 REBAL COMPACT WAIT 50 50 0 0
1 2 REBAL RESYNC WAIT 50
1 2 REBAL RESILVER WAIT 50
1 2 REBAL REBALANCE WAIT 50
1 2 REBAL COMPACT WAIT 50
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POC Execution and Result: Hardware tests
We were requested to unplug power cable of one storage cell!
OEM Alarm
Host=sgexaadm02vm01.customer.ch
Target type=Cluster ASM
Target name=+ASM_cluster-clu1
Categories=Availability
Message=Failure Group DATAC1.SGEXACELADM03 is unavailable.
Severity=Critical
Event reported time=Apr 15, 2015 5:00:25 PM CEST
Host=sgexaadm02vm01.customer.ch
Target type=Cluster ASM
Target name=+ASM_cluster-clu1
Categories=Availability
Message=Failure Group RECOC1.SGEXACELADM03 is unavailable.
Severity=Critical
Event reported time=Apr 15, 2015 5:00:25 PM CEST
Host=sgexaadm02vm01.customer.ch
Target type=Cluster ASM
Target name=+ASM_cluster-clu1
Categories=Availability
Message=12 disks are offline.
Severity=Critical
Event reported time=Apr 15, 2015 5:02:05 PM CEST
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After plugging back power
cable, rebuild starts few
minutes after…

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POC Execution and Result: Conclusions
 OLTP Batch
 Significant gain even after huge vCPU reduction
 No I/O wait events
 Documentum
 Major improvement when smart scan is used
 Better system stability even with default optimizer settings not allays aligned with
vendor requirements
 Performance increase with a factor from 4 to 9 depending if smart scan is use or not
 Hardware tests
 Storage protection tested and verified as requested!
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Proposed Architecture
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Exadata X5-2 based architecture
Customer constraints
 Isolation
 Secure maintenance operation
 Control and adjust resource allocation
 Continuity
 No high availability required, Data Guard protection is enough
 Full capacity usage, distribute production database between the two data centers
 Performance
 Increase performances in particular for Documentum
 New application will come soon
 Licensing
 Optimize and control licensing
 Propose a five years projection plan to absorb future growth
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Exadata X5-2 based architecture with OVM
DBServer1 DBServer2
PROD1
PROD2
PROD3 PROD5
PROD6
PROD7
QAS1
QAS2
INT2
DEV1
DEV2
DRP1
IO Resource Manager: Category, Inter-Database, intra-Database (db_unique_name unique on all VClusters)
INT1
DRP1
QAS3
QAS4
INT4
DEV3
DEV4
DRP3
INT3
DRP4
10 vCPUs10 vCPUs
4 vCPUs 4 vCPUs 4 vCPUs4 vCPUs
2 vCPUs2 vCPUs
vClu2
vClu1 PRD
QA/DEV
vClu3
vClu4
INT
DRP
data
fra
data
fra
StorageServer1 StorageServer2 StorageServer3
HD1 HD2 HD3 HD4 HD5 HD6 HD1 HD2 HD3 HD4 HD5 HD6 HD1 HD2 HD3 HD4 HD5 HD6
data
fra
data
fra
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In total:
 40 vCPUs for production databases
 16 vCPUs for DEV/QA databases
 16 vCPUs for INT databases
 8 vCPUs for DRP databases
 No additional licenses to purchase
 Fix every VMs to max 14 vCPUs (to adjust power on demand)
Exadata X5-2 based architecture with OVM
Exadata X5-2 OVM Oracle infrastructure
Environment Exadata Storage Required Cores/Server Max Cores/Server Total Cores Threads CPU to License
PRD,INT,QAS,DEV,DRP I 30 TB 18 10 20 40 10
PRD,INT,QAS,DEV,DRP II 30 TB 18 10 20 40 10
Total 60 TB 25 TB 40 80 20
CPU, storage and licensing
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 Dynamic host cpu reconfiguration using: xm vcpu-set
 Dynamic oracle CPU_COUNT adjustment as of Oracle Oracle 12c
- Dynamic resource management update
Exadata X5-2 based architecture with OVM
Adjust power on demand: MAX 14 vCPUs per VM
PROD
DBServer1
QA DEV DR
14 vCPUs
6 vCPUs
2 vCPUs
mini
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5 years projection plan
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Five Years Projection Plan
The five years projection plan is based on customer estimation with:
 Up to 15% of storage increase per year
 Up to 5% of processing increase per year
 Solution: Exadata 1/8 de Rack with all Cores activated
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In total:
 72 vCPUs for production databases
 24 vCPUs for DEV/QA databases
 24 vCPUs for INT databases
 16 vCPUs for DRP databases
 Buy 14 additional EE + Options CPU licenses to fit the needs
 Fix every VMs to max 28 vCPUs (to adjust power on demand)
Five Years Projection Plan
Exadata X5-2 OVM Oracle infrastructure
Environment Exadata Storage Required
Cores/Server
Max
Cores/Server Total Cores Threads CPU to License
PRD,INT,QAS,DEV,DRP I 32 TB 50 TB 18 17 (18-1) 34 68 17
PRD,INT,QAS,DEV,DRP II 32 TB 50 TB 18 17 (18-1) 34 68 17
Total 64 TB 50 TB 68 136 34
CPU, storage and licensing
.
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Conclusions
The proposed solution responds perfectly to customer requirements on all areas
 Environment Isolation
 Performance
 Capacity usage and workload adjustments
 Disaster recovery
 Licensing optimization
 Fulfil five year projection plan requirements
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Questions...
2015 © Trivadis
BASEL BERN BRUGG LAUSANNE ZUERICH DUESSELDORF FRANKFURT A.M. FREIBURG I.BR. HAMBURG KOPENHAGEN MUNICH STUTTGART VIENNA
Jacques Kostic
Senior Consultant IMS Lausanne
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Exadata X5-2 POC with OVM
41
DOAG-19 Nov 2015
Trivadis at the DOAG 2015
Level 3 - right next to the escalator
We look forward to your visit.
Because with Trivadis you always win.