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SURENDER SARA NCOAUG Email : SURENDER.SARA@ORABYTE.COM SURENDER.SARA@SERACONSULTING.US

RAC and 11i - 101. SURENDER SARA NCOAUG Email : SURENDER.SARA@ORABYTE.COM SURENDER.SARA@SERACONSULTING.US. Two Node Architecture, Unprotected. Two Node Architecture, Protected Apps tier and unprotected DB tier. Two Node Architecture, Protected Apps tier and DB tier. Failover Cluster.

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SURENDER SARA NCOAUG Email : SURENDER.SARA@ORABYTE.COM SURENDER.SARA@SERACONSULTING.US

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  1. RAC and 11i - 101 SURENDER SARA NCOAUG Email : SURENDER.SARA@ORABYTE.COM SURENDER.SARA@SERACONSULTING.US

  2. Two Node Architecture, Unprotected

  3. Two Node Architecture, Protected Apps tier and unprotected DB tier

  4. Two Node Architecture, Protected Apps tier and DB tier

  5. Failover Cluster • Detecting failure by monitoring the heartbeat and checking status of resources • Reorganizing Cluster membership in the cluster manager • Transferring Disk ownership from primary node to secondary node • Mounting the FS on secondary node • Starting DB instance • Recovering the Database and rollback of uncommitted data • Reestablishing the client connections to the failover node

  6. FAILOVER CLUSTER OFFERINGS • Veritas cluster server • HP Service Guard • Microsoft Cluster Service with Oracle Failsafe • RedHat Linux Advanced Server 2.1 • Sun Cluster Oracle Agent • Compaq, now HP, Segregated Cluster • HACMP

  7. RAC

  8. Scalable RAC

  9. Real Application Cluster • Many instances of Oracle running on many nodes • Multiple instances share a single physical database • All instances have common data, control, and initialization files • Each instances has individual, shared log files and rollback segments or undo tablespaces • All instances can simultaneously execute transactions against the single database • Caches are synchronized using Oracle’s Global Cache Management technology (Cache Fusion)

  10. RAC Building Blocks • Instance and Database files • Shared storage with OCFS, CFS or raw devices • Redundant HBA cards per HOST • Redundant NIC cards per HOST, one for cluster interconnect and one for LAN connectivity • Local RAID protected drives for ORACLE_HOMES ( OCFS does not support ORACLE_HOME install)

  11. CLUSTERINTER CONNECT FUNCTION • - Monitoring Health, status and message synchronization • - Transporting Distributed Lock manager messages • - Accessing remote File system • - Moving application specific traffic • - providing cluster alias routing Interconnect Requirements • - Low latency for short messages • - High speed and sustained data rates for large messages • - LOW Host CPU utilization • - Flow Control, Error Control and heart beat continuity monitoring • - switched network that scale well

  12. INTERCONNECT PRODUCTS • Memory Channel • SMP Bus • Myrinet • Sun SCI • Gigabit Ethernet • Infiband Interconnect

  13. INTERCONNECT PROTOCOL • TCP/IP • UDP • VIA • RDG • HMP

  14. IO CHANNEL HBA Products • Adaptec • DPT • LSI Logic • Interphase • Qlogic • Emulex • JNI

  15. FACRIC SWITCHES • mcDATA • EMC • QLOGIC • BROCADE

  16. CLUSTER NODES NUMA SMP • - shared system bus and IO • - expensive and scalability problems • - Adding more CPU can result into upgrading architecture components • - DELL and HP-Compaq BLADE Servers • - BladeFram system from egenera • - egenera - 24 2 way and 4 way SMP processing resources • - egenera - redundant central controllers ,redundant high-speed interconnects, PAN manager • - egenera - PAN manager handles external storage mapping and virtualization • - egenera - PAN manager handles , IO and network traffic to and from individual servers

  17. Oracle’s High Availability (HA) Solution Stack Real Application ClustersContinuous Availability for all Applications System Failure Data GuardZero Data Loss UnplannedDowntime Data Failure& Disaster Flashback QueryEnable Users to Correct their Mistakes Human Error Dynamic ReconfigurationCapacity on Demand without Interruption SystemMaintenance PlannedDowntime Online RedefinitionAdapt to Change Online Data Maintenance

  18. Shared Storage Options • NFS Mounted storage ( Netapp ) • SCSI shared storage with OCFS, OFS, Raw devices • Fiber channel Storage with fabric Architecture

  19. 11i Steps - 1 • Install RED HAT As 2.1 on all nodes • Install 11i as single node install on Apps Tier • Attached shared storage and install drivers for HBA

  20. 11i Steps -2 ( install OS Patches) • rpm -Uv tar-1.13.25-9.i386.rpm • This provides an updated version of tar • Allows a user to tar files from a running database on OCFS • examples : • tar --o_direct -cvf /tmp/backup.tar *

  21. 11i Steps -2 ( install OS Patches) • rpm -Uv fileutils-4.1-4.2.i386.rpm • This provides an updated version of cp and dd • Allows a user to copy files from a running database on OCFS • examples : • cp --o_direct /ocfs/quorum.dbf /tmp/backup/quorum.dbf • dd o_direct=yes if=/ocfs/quorum.dbf of=/tmp/backup/quorum.dbf

  22. 11i Steps -3 Install oracle provided RPM’s • ocfs-support-1.0.9-11.i686.rpm • ocfs-tools-1.0.9-11.i686.rpm • j2sdk-1_3_1_09-linux-i586.rpm.bin • unzip-5.50-30.i386.rpm • zip-2.3-10.i386.rpm • wu-ftpd-2.6.1-21.i386.rpm • hangcheck-timer-2.4.9-e.10-0.4.0-2.i686.rpm • hangcheck-timer-2.4.9-e.10-enterprise-0.4.0-2.i686.rpm

  23. 11i steps -3 ( interconnect) • ifconfig eth0:0 192.168.2.100 • route add -host 192.168.2.100 dev eth0:0 • Do this on each node • Create watchdog file (oracle installer checks for this to install cluster option) # touch /dev/watchdog • Setup hangcheck-timer module • # vi /etc/modules.conf • options hangcheck-timer hangcheck_tick=30 hangcheck_margin=180 • # modprobe hangcheck-timer

  24. 11i steps -5 OCFS.conf – 5 • # ocfstool ( from x windows) • # ocfs config • # Ensure this file exists in /etc • # • node_name = linux3.home.com • node_number = • ip_address = 192.168.1.100 • ip_port = 7000 • comm_voting = 1 • guid = 9D3B77AF2FF26E92E25D00E04CA44B58

  25. 11i Steps -6 install OCFS • mkfs.ocfs -F -b 128 -L /s01 -m /s01 -u 500 -g 500 0755 /dev/sda1 • srvconfig_loc=/s01/oragsd-config ( touch this file)

  26. 11i steps -7 OCM • $ ls • If cmcfg.ora exists: • $ cp cmcfg.ora cmcfg.ora.original • If cmcfg.ora does not exist: • $ cp cmcfg.ora.tmp cmcfg.ora • $ echo HostName=dc1node3inter >> cmcfg.ora • $ vi cmcfg.ora • [comment out WatchdogSafetyMargin and WatchdogTimerMargin] • PrivateNodeNames=linux22 linux33 • PublicNodeNames=linux2 linux3 • MissCount=210 • KernelModuleName=hangcheck-timer • CmDiskFile=/u02/oracm-qourum • $ vi ocmargs.ora • [comment out first line, which contains the word “watchdogd”] • $ cd ../bin • $ cp ocmstart.sh ocmstart.sh.original • $ vi ocmstart.sh • [remove words “watchdog and” from line containing “Sample startup script...”] • [remove every line containing “watchdogd”, uppercase or lowercase. If it’s in a if/then/fi then remove the whole if/then/fi.] • $ su – root • export ORACLE_HOME=/d02/oracle/proddb/9.2.0 • /d02/oracle/proddb/9.2.0/oracm/bin/ocmstart.sh • Configure and Start Cluster Manager • $ cd $HOME/product/9.2/oracm/admin

  27. 11i steps -4 ( cp/dd - DB files to shared storage ) • cp --o_direct /d03/oracle/proddata/* /s01/oracle/proddata/ • Recreate the controlfile

  28. 11i steps 8 – init.ora / spfile • Create UNDO TBS for each instance • Enable and disable thread for instance 2 from instance 1 and vice versa

  29. 11i steps 9 – instance 1 • # RAC-specific Parameters • # • ######### • cluster_database = true • cluster_database_instances=2 • thread = 1 • instance_number = 1 • instance_name = PRODi1 • service_names = PROD • local_listener = PRODi1 • remote_listener = PRODi2

  30. 11i steps 10 – instance 2 • cluster_database = true • cluster_database_instances=2 • thread = 2 • instance_number = 2 • instance_name = PRODi2 • service_names = PROD • local_listener = PRODi2 • remote_listener = PRODi1

  31. 11i Apps tier – 806/iAS tnsnames.ora • PROD = (DESCRIPTION= • (ADDRESS_LIST = • (ADDRESS=(PROTOCOL=tcp)(HOST=linux1)(PORT=1521)) • (ADDRESS=(PROTOCOL=tcp)(HOST=linux2)(PORT=1521)) • ) • (CONNECT_DATA=(SERVICE_NAME=PROD)(SERVER=DEDICATED)) • ) • PRODi2 = (DESCRIPTION= • (ADDRESS=(PROTOCOL=tcp)(HOST=linux2)(PORT=1521)) • (CONNECT_DATA=(INSTANCE_NAME=PRODi2)(SERVICE_NAME=PROD)) • ) • PRODi1 = (DESCRIPTION= • (ADDRESS=(PROTOCOL=tcp)(HOST=linux1)(PORT=1521)) • (CONNECT_DATA=(INSTANCE_NAME=PRODi1)(SERVICE_NAME=PROD)) • )

  32. Modify DBC file for Failover • APPS_JDBC_DRIVER_TYPE=THIN • FND_MAX_JDBC_CONNECTIONS=100 # Setup at Apps Tier • APPS_JDBC_URL=jdbc:oracle:thin:@(DESCRIPTION= (ADDRESS_LIST=(LOAD_BALANCE=ON) (ADDRESS=(PROTOCOL=TCP)(HOST=linux1)(PORT=1521)) (ADDRESS=(PROTOCOL=TCP)(HOST=linux2)(PORT=1521))) (CONNECT_DATA=(SERVICE_NAME=prod)))

  33. WHAT can & cannot failover • SQL* PLUS will failover using TAF • JDBC Connections will failover • Forms run time connections will not, users will have to reconnect

  34. Questions And Answers • Surender.sara@veritiesllc.com Contact us for 5 DAY Live 11i and RAC building workshop

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