SCALABLE ENTERPRISEMigrating Oracle Database 10gfrom Sun Servers to <strong>Dell</strong> ServersOracle Database 10g, the latest version of Oracle Database, is designed to make databasemigration from one platform to another easy. To better understand this process, ateam of <strong>Dell</strong> engineers migrated a 100 GB Oracle database from a Sun server runningthe Sun Solaris operating system to a <strong>Dell</strong> <strong>Power</strong>Edge server running either theMicrosoft Windows Server 2003 operating system (OS) or the Red Hat EnterpriseLinux OS. This article explains the details and best practices involved in successfulOracle database migrations.BY TODD MUIRHEAD; DAVE JAFFE, PH.D.; AND PAUL RADTo improve the process of migrating data from onedatabase to another or from one platform to another,two key Oracle tools for data migration—Data Pumpand Transportable Tablespaces—were enhanced inOracle Database 10g. Data Pump is an improved versionof the Oracle Import and Oracle Export utilities fromprevious versions of Oracle Database. The improvementsare designed to add capabilities and decreasethe time required for exporting and importing OracleDatabase 10ggdata.While Data Pump exports the Oracle data into anotherform for migration, the Transportable Tablespaces featureallows for the actual data files to be copied or transportedto another system and then simply attaches them to thetarget database. In previous releases of Oracle Database,the Transportable Tablespaces feature allowed a tablespaceto be moved across Oracle databases running on thesame processor architecture. Transportable Tablespacesin Oracle Database 10g g enables data to be moved acrossdifferent processor architectures. This feature can facilitatedata migration from one hardware platform to another.This article examines testing performed in June 2004by a team of <strong>Dell</strong> engineers, in which a 100 GB Oracle databasewas migrated from a Sun Fire V440 server runningSun Solaris to a <strong>Dell</strong> <strong>Power</strong>Edge 6650 server running eitherMicrosoft Windows Server 2003 or Red Hat Enterprise Linux.Data Pump was used to easily export the database from oneOracle Database 10gg instance running on the Sun server andimport it into another Oracle Database 10gg instance runningon the <strong>Dell</strong> <strong>Power</strong>Edge server. In this study, TransportableTablespaces was used to migrate data from the Sun FireV440 server—which used UltraSPARC IIIi processors—tothe <strong>Dell</strong> <strong>Power</strong>Edge 6650 server, which used Intel ® Xeonprocessors MP. With previous versions of Oracle, it wouldnot have been possible to use Transportable Tablespaces toaccomplish this migration.102POWER SOLUTIONS Reprinted from <strong>Dell</strong> <strong>Power</strong> <strong>Solutions</strong>, February 2005. Copyright © 2005 <strong>Dell</strong> Inc. All rights reserved. February 2005
SCALABLE ENTERPRISEConfiguring the hardware and softwareTo test migration from Sun to <strong>Dell</strong>, the <strong>Dell</strong> team installed and configureda Sun Fire V440 server and a <strong>Dell</strong> <strong>Power</strong>Edge 6650 server. Asshown in Figure 1, both servers were configured with four processorsand 16 GB of RAM as well as with several internal drives andon-board network interface cards (NICs).A <strong>Dell</strong>/EMC CX600 storage array provided the storage for thedatabase and was connected to both Sun and <strong>Dell</strong> servers via astorage area network (SAN). Each server was assigned three 10-diskRAID-10 logical storage units (LUNs) to be used for data and two2-disk RAID-1 LUNs to be used for logs. An additional 5-disk RAID-5LUN was also assigned to each server for data staging during migrationand initial database creation.Both servers were configured with current operating systems andOracle Database 10g. Oracle’s Universal Installer tool can be used onboth Sun and <strong>Dell</strong> servers to install Oracle Database 10g, g enablingadministrators to select the same options during installation on differentplatforms.Sun Fire V440 <strong>Dell</strong> <strong>Power</strong>Edge 6650Operating system Solaris 9 12/03 Microsoft Windows Server 2003,Enterprise Edition, or Red HatEnterprise Linux AS 3CPUFour UltraSPARC IIIi processors Four Intel Xeon processors MPat 1.28 GHz and with 1 MB at 3.0 GHz and with 4 MBof L2 cacheof L3 cacheMemory 16 GB 16 GB (16 × 1 GB dual in-linememory modules, or DIMMs)Internal disks** Four 73 GB 10,000 rpm Four 73 GB 10,000 rpmUltra320 SCSIUltra320 SCSINICs Two 10/100/1000 Mbps Two 10/100/1000* Mbps(internal)(internal)Disk controller On-board SCSI <strong>Power</strong>Edge Expandable RAIDController 3, Dual Channel(PERC 3/DC)Fibre Channel hostbus adapterTwo QLogic QLA2340 Two QLogic QLA2340Fibre Channel 34 GB to 73 GB 10,000 rpm 34 GB to 73 GB 10,000 rpmstorage disks on <strong>Dell</strong>/EMC CX600 disks on <strong>Dell</strong>/EMC CX600*This term does not connote an actual operating speed of 1 Gbps. For high-speed transmission, connection to a Gigabit Ethernetserver and network infrastructure is required.**For hard drives, GB means 1 billion bytes; actual capacity varies with preloaded material and operating environment, and willbe less.Figure 1. Sun Fire V440 and <strong>Dell</strong> <strong>Power</strong>Edge 6650 server configurationsSolaris 9 12/03 was installed on the Sun Fire V440 server usingSun Factory JumpStart. Two installations were performed on thesame <strong>Power</strong>Edge 6650 server to test two operating systems: Red HatEnterprise Linux AS 3 and Microsoft Windows Server 2003, EnterpriseEdition. Both were installed using <strong>Dell</strong> OpenManage Server Assistantsoftware. Oracle Database 10gg installation guides and release notes forthe respective platforms were then used to verify that the correct softwarelevels were used and that the necessary settings were changed.The new Automatic Storage Manager (ASM) feature of OracleDatabase 10ggwas used during the creation of the initial databaseon both Sun and <strong>Dell</strong> servers to improve the performance andmanagement of the data files. The three large RAID-10 LUNs wereassigned in ASM to be part of a single file group for the data files,while each of the RAID-1 LUNs was assigned to a separate ASMfile group for logs. An initial database instance was created on eachof the servers using the OracleDatabase Creation Assistant.ASM was used for the storageon both instances.The 100 GB DVD store (DS)database schema was loadedonto the Sun system. It comprisedfour main tables and oneother table (see Figure 2).The Customers table wasprepopulated with 200 millioncustomers. The Orders table was prepopulated with 10 million ordersper month for nine months, the Orderlines table was prepopulatedwith an average of five items per order, and the Products tablecontained 1 million DVD titles. In addition, the Categories tablelisted 16 DVD categories.Using Data Pump to prepare the migrationData Pump export and Data Pump import are additional utilitiesin Oracle Database 10g, g but have a similar look-and-feel to theoriginal export and import utilities. Data Pump export is a utilityfor unloading data and metadata from the database into a set ofoperating system files called dump file sets. A dump file set canbe moved to another system and loaded by the Data Pump importutility. Data Pump import is used to load the metadata and datastored in an export dump file set into the database on the targetsystem. Three methods can be used to interact with Data PumpTableColumns Number of rowsCustomers CUSTOMERID, FIRSTNAME, LASTNAME, 200 millionADDRESS1, ADDRESS2, CITY, STATE, ZIP,COUNTRY, REGION, EMAIL, PHONE, CREDITCARD,CREDITCARDEXPIRATION, A USERNAME, PASSWORD,AGE, INCOME, GENDEROrdersOrderlinesProductsCategoriesFigure 2. DVD store database schemaORDERID, ORDERDATE, CUSTOMERID, NETAMOUNTT,TAX,TOTALTAMOUNTORDERLINEID, ORDERID, PROD_ID, QUANTITY,ORDERDATETransportable Tablespacesin Oracle Database 10genables data to bemoved across differentprocessor architectures.90 million450 millionPROD_ID, CATEGORY, TITLE, ACTOR, PRICE, 1 millionQUAN_IN_STOCK, SPECIALCATEGORY, CATEGORYNAME 16www.dell.com/powersolutions Reprinted from <strong>Dell</strong> <strong>Power</strong> <strong>Solutions</strong>, February 2005. Copyright © 2005 <strong>Dell</strong> Inc. All rights reserved. POWER SOLUTIONS 103
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