Oracle Database 10g RMAN and ATA Storage in Action Paul Tsien Oracle Corporation Bob Ng EMC Corporation Session id: 36675

Agenda  Oracle, EMC, and the New Disk Economics  Oracle Recovery Manager (RMAN) 10g Overview  Automatic Disk Based Backup and Recovery  Incrementally Updated Backups  EMC ATA technology offering  Testing with Oracle 10g and EMC ATA  Summary and Q&A

Disk Dollar Per Megabyte Trend For The Last 20 Years

Oracle, EMC and the New Disk Economics  Oracle and EMC both are leveraging the new disk economics to deliver superior value propositions to our customers  Oracle disk based backup and recovery is faster, simpler and more reliable  EMC ATA storage technology is right answer to support Oracle disk based backup/recovery

New World: Disk Based Data Recovery  Disk economics are close to tape  Disk is better than tape – Random access to any data  We rearchitected our recovery strategy to take advantage of these economics – Random access allows us to backup and recover just the changes to the database  Backup and Recovery goes from hours to minutes 2000 ’ s GB 1980 ’ s MB 1000x increase Trade cheap disk space for expensive down time

Recovery Manager: Oracle’s Backup & Recovery Utility  Over 25 Man Years of Engineering Technology provides: – Intimate knowledge of database file formats and recovery procedures – Manages and automates the backup, restore, and recovery process – Creates and maintains backup policies – Catalogs all backup and recovery activities – Operates on-line and in parallel for fast processing – Corrupt block detection during backup and restore and the ability to validate backups – Integrated with Enterprise Manager & 3rd party network backup products Media Management Layer Enterprise Manager & 3 rd Party Tools Network RecoveryManager

Flash Recovery Area  Unified storage location for all recovery files and recovery related activities in an Oracle Database. – Centralized location for control files, online redo logs, archive logs, flashback logs, backups – A flash recovery area can be defined as a directory, file system, or ASM disk group – A single recovery area can be shared by more than one database  Minimize the number of initialization parameters to set when you create a database – Define a database area and flash recovery area location – Oracle creates and manages all files using OMF Database AreaFlash Recovery Area

Flash Recovery Area Space Management Disk limit is reached and a new file needs to be written into the Flash Recovery Area Backup Files to be deleted Archive Logs & Database File Backups Warning Issued to user Space Pressure occurs RMAN updates list of files that may be deleted 1 2 Oracle delete files that are no longer required on disk. Flash Recovery Area

Benefits to Using a Flash Recovery Area  Unifies the storage location of related recovery files  Manages the disk space allocated for recovery files automatically  Simplifies database administrator tasks  Much faster backup  Much faster restore  Much more reliable due to inherent reliability of disks

Incrementally Updated Backups  Eliminates the need to perform a whole database backup.  Reduces the time required for media recovery since the image copy is updated with the latest block changes. RMAN RECOVER COPY OF DATAFILE RMAN incremental backup Initiate Merge Incrementally Updated Backups

Eliminate Shrinking Backup Windows Syndrome!  Fully automatic disk based backup and recovery – Set it and Forget it  Nightly incremental backup rolls forward recovery area backup – Changed blocks are tracked in production DB  Full scan is never needed – Dramatically faster (20x) – Blocks validated to prevent corruption of backup copy  Use low cost ATA disk array for recovery area Two Independent Disk Systems Flash Recovery Area Nightly Apply Validated Incremental Weekly Archive To Tape Database Area Much Faster & Easier

Disk Based Backup/Recovery Benefits  Much faster backup – Just propagate changes to recovery area – Dramatic difference for large databases  Much faster restore – Copy backup files from Recovery Area – Or simply use the copy in the Recovery Area  Much more reliable due to inherent reliability of disks – Tapes not needed for normal backup/recovery, only for archiving

EMC ATA Storage Technology  Ideal for satisfying the added storage space need to support Oracle Database 10g backup- to-disk model – Reliable – Satisfactory performance – Capacity, Ease of expansion – Manageability – Cost effective – Interoperability – Investment Protection

240 drives per storage system SP Fibre x 4 Mirrored Cache FC LCC Storage ProcessorFanFanFan Power Supply Power supply SPSSPS SP Fibre x 4 Mirrored Cache FC Storage Processor LCC CPU A T A D I S K S EMC CLARiiON HA Architecture

Katana Klondike Katana Klondike Katana Klondike Katana Klondike Katana Klondike Katana Klondike Katana Fibre GB ATA Drives ATA GB Fibre Drives CX600 SPE Assembly Fibre 15-15k rpm Fibre drives ATA GB ATA Drives GB Fibre Drives Fibre ATA GB ATA Drives GB Fibre Drives Fibre 15 ATA Drives ATA Flexibility…. Mix and Match

EMC ATA Technology Meeting the Need Reliability Delivered with time proven CLARiiON HA architecture. Disk storage RAID protection of your choice Performance CLARiiON 6 th generation storage system driven with dual Intel 2GHz processors and sophisticated caching technology Capacity Up to 200+ ATA drives at 250GB (and higher). Modular expansion and flexibility to accommodate growth Manageability Web Based Management from anywhere of one or more CLARiiON systems with EMC CC Navisphere Manager Cost effectiveness ATA storage cost per MB approach point of matching tapes with significantly faster read/write efficiency Interoperability EMC SAN Copy capability allow block storage data to be exchanged between CLARiiON and other storage on SAN Investment Protection EMC CLARiiON CX family supports upgrade path from low end entry system to high end to accommodate your growth

Testing RMAN 10g Backup to ATA Flash Recovery Area  Test configuration – Server : Dell x2.8Ghz CPUs, 4GB RAM – OS : SuSE SLES 8.0 kernel – Oracle Software : 10g beta for Linux – Host I/O Adapters : QLOGIC 2340 (two) – FC SAN DB storage RMAN 10g DB files ATA area 1 DLT tape drive 1 DLT tape drive 2 ATA area 2

Testing Objectives  Compare RMAN full backup to ATA based disk recovery area versus tape type channel  Compare RMAN restore and recover from ATA disk vs. tape

Note: RMAN backup and restore speed is limited by available hardware Observations RMAN backup and restore streaming 40+MB/s − Oracle RMAN drives full backup/recovery I/O at 1MB per OS request whenever possible − Ideal for CLARiiON 8+1 RAID-5 read/write when data stripes over the 8 spindles at 64KB or 128KB per stripe element − CLARiiON write cache ensures full stripe data transfer to/from storage area − Slower ATA disk seek does not significantly affect full stripe I/O as service time dominated by data transfer time Backup writes to tape channels max 15MB/s per parallel RMAN backup channel

Conclusions from Testing Backup/Recovery from disk obviously more effective than with traditional tape approach EMC ATA disk technology does the job

Related Technologies  CLARiiON storage based data replication/cloning software – Allows captured disk data to be effectively replicated to another storage area or storage system without server resource – Second disk image copy can be repurposed and used without interfering with primary copy usage  Oracle Data Guard – Automates the creation and maintenance of one or more transactionally consistent copies (standby) of the production (or primary) database – If the primary database becomes unavailable (disasters, maintenance), a standby database can be activated and assume the primary role

A Summary  Joint Oracle/EMC test data shows that disk based backup and recovery is faster, simpler, and more reliable  EMC ATA storage is ideal for satisfying the added storage space required for Oracle disk based backup and recovery  Oracle10g disk based backup and recovery and EMC ATA storage technology deliver superior solutions by leveraging the new disk economics

Next Steps High Availability Sessions from Oracle 11:00 AM How Oracle Database 10g Revolutionizes Availability and Enables the Grid 3:30 PM Oracle Recovery Manager (RMAN) 10g: Reloaded 5:00 PM Proven Techniques for Maximizing Availability 8:30 AM Oracle Database 10g - RMAN and ATA Storage in Action 11:00 AM Oracle Data Guard: Maximum Data Protection at Minimum Cost 1:00 PM Oracle Database 10g Time Navigation: Human-Error Correction 4:30 PM Data Guard SQL Apply: Back to the Future Wednesday in Moscone Room 304Tuesday in Moscone Room 304 For More Info On Oracle HA Go To

Next Steps High Availability Sessions from Oracle 8:30 AM in Moscone Room 304 Oracle Database 10g Data Warehouse Backup and Recovery: Automatic, Simple, Reliable 8:30 AM in Moscone Room 104 Building RAC Clusters over InfiniBand Thursday For More Info On Oracle HA Go To Real Application Clusters Data Guard Database Backup & Recovery Flashback Recovery LogMiner, Online Redefinition, and Cross Platform Transportable Tablespaces Database HA Demos All Four Days In The Oracle Demo Campground See EMC’s ATA technology in action at the EMC booth #1302

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