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Program Scope

The goal of this program is to validate hardware with Oracle Linux and Oracle VM, and to identify issues and configuration details that would impact customer deployments. Oracle developed the program to go far beyond the standard certification testing normally performed with operating systems. Hardware vendors participating in this program perform thorough testing of the hardware in real-world configurations with Oracle Linux and Oracle VM.

This is not a database certification. Oracle Database is a component of the environment because it is demanding on hardware resources (processor, memory, cache, storage, network) and the operating system, and well suited for this advanced level of testing. The validation program uses Oracle Database as a tool and hardware is not certified with Oracle Database as a result of the validation program.

For more information please see the program's Frequently Asked Questions (FAQ).

Validated Configuration Details
Configuration SummaryOEL 5 Update 1 x86-64 on Dell PowerEdge 2950 and NetApp FAS6030 with Oracle Database 11g Release 1
Publication Date09-APR-08
Server PlatformDell PowerEdge 2950
Storage ModelNetApp FAS6030
Oracle SoftwareOracle Database 11g Release 1 ( for Linux x86_64
Linux DistributionOracle Enterprise Linux 5 Update 1 x86-64
Server and Storage Platform Details
Server Model2 X Dell PowerEdge 2950
Processors2 X Dual Core Intel(R) Xeon(TM) CPU 5160 3.00GHz
Memory8GB RAM
OnBoardStorage2 X 146GB SAS 15 K
Network/Interconnect1 X Intel(R) PRO/1000 PT Dual Port Server Adapter , 4 X Intel(R) Gigabit VT Qual Port Server Adapter , 1 X Broadcom BCM5708C NetXtreme II Gigabit Ethernet (NDIS VBD Client)
Storage ModelNetApp FAS6030
Switch Details
Switch ModelCatalyst 2960 24 10/100/1000, 4T/SFP
Switch TypeNetwork Switch
Additional Info.None
Linux Distribution Details
OSOEL 5 Update 1 x86-64
Kernelkernel-2.6.18- or higher
Additional Packages Needed From Distribution
Oracle Packages
oracle-validated-1.0.0-3.el5.x86_64.rpmThis package automatically pulls in package dependencies and sets system parameters recommended above. It is not required but is recommended to save time in getting the system setup. It is available from ULN by subscribing to the "Oracle Software" channel and then using up2date to install it. The dependent packages will be installed and parameters will be adjusted as part of this up2date process. NOTE: For supportability and diagnosability gdb should also be installed using up2date
Configuration Files
Conf File Settings Comments
/etc/modprobe.confoptions bonding miimon=100 mode=1 max_bonds=3 
 alias bond0 bonding 
 alias bond1 bonding 
 alias bond2 bonding 
 options e1000 FlowControl=1,1 
/etc/security/limits.conforacle hard nofile 131072 
 oracle soft nproc 131072 
 oracle soft nofile 131072# depending on size of db, these may need to be larger
 oracle hard memlock 50000000 
 oracle soft memlock 50000000# set memlock greater than or equal to the sga size to allow oracle to use hugepages if configured
 oracle soft core unlimited 
 oracle hard core unlimited 
 oracle hard nproc 131072 
/etc/sysconfig/selinuxSELINUX=disabled#This configuration uses nfs for the root filesystem. Using selinux with nfsroot is currently not supported in OEL4/RHEL4. Hence, it is recommended to turn selinux off
/etc/sysctl.confnet.core.rmem_max=4194304# rmem_max can be tuned based on workload to balance performance vs lowmem usage
 net.ipv4.ip_local_port_range=1024 65000 
 kernel.shmmax=4120403968#Set to a value half the size of physical memory
 kernel.sem=250 32000 100 142 
 kernel.msgmnb = 65536 
 net.core.rmem_default=262144# rmem_default can be tuned based on workload to balance performance vs lowmem usage
Filesystems Tested
Filesystem Mount Options Details
NFSrw,bg,hard,nointr,tcp,nfsvers=3,timeo=600,rsize=32768,wsize=32768Single instance data files
 rw,bg,hard,nointr,tcp,nfsvers=3,timeo=600,rsize=32768,wsize=32768,actimeo=0 RAC data files
 rw,rsize=32768,wsize=32768,hard,bg,nfsvers=3,tcp,actimeo=0,timeo=600RAC ocr and voting disk files
Driver Modules
Driver ModuleNetwork driver module (e1000)
SettingsLoad e1000 with FlowControl=1,1 ( for Rx )
Additional Info.The driver used is the e1000 driver supplied with the distribution
Driver ModuleNetwork driver module (bnx2)
SettingsIf using bnx2, Rx needs to be set on.
Additional Info.The driver used is the bnx2 driver supplied with the distribution
Driver ModuleNetwork driver module (igb)
SettingsIf using igb, Rx needs to be set on.
Additional Info.The driver used is the igb driver supplied with the distribution
Two gigabit networks, 1 for public(igb) and 1 private(igb).
The swap partition is 16GB.
Oracle Software Details
ProductOracle Database 11g Release 1, Single Instance and Oracle Real Application Clusters (RAC) for Linux x86_64
Patches7592335 , 6778860
Configuration Feedback
Bug No5593995
SummaryUsing Pro*C causes the system to run out of memory
AffectsCaused the system to hang.
SymptomThe system hangs.
Solution/WorkaroundFor OEL5U3, Remove references to pathnames that do not exist on your system in pcscfg.cfg. Fixed in OEL5U4.
Bug No6045759
SummaryApplications using random numbers may hang or report errors if there is insufficient random data in the system
AffectsOracle applications tools (e.g: java apps) requesting random data
SymptomOracle applications tools (e.g: java apps) requesting random data from /dev/random either hang or print out the following information message: Not enough random bytes available. Please do some other work to give the OS a chance to collect more entropy!
Solution/WorkaroundIf using e1000 or bnx2 network drivers on OEL5 the entropy=1 module option can be set for either of these drivers in /etc/modprobe.conf. Fixed in 2.6.18- kernel or higher
Bug No6081490
SummaryWith selinux enabled, ocfs2 fails to startup via /etc/init.d/o2cb start
AffectsAutomated startup of ocfs2 via /etc/init.d/o2cb start
SymptomWith selinux enabled, starting ocfs2 via "/etc/init.d/o2cb start" fails with the following error: "mount: block device ocfs2_dlmfs is write-protected mounting read-only. mount: cannot mount block device ocfs2_dlmfs read-only. Unable to mount ocfs2_dlmfs filesystem Failed"
Solution/WorkaroundFor OEL5U3, Manually mount OCFS2_DLMFS using the command mount -t ocfs2_dlmfs ocfs2_dlmfs /dlm. Fixed in OEL5U4.
Bug No6241862
SummaryUsing sysrq+t with netconsole/tg3 configured causes the system to panic.
AffectsTroubleshooting of systems via "alt sysrq t" with netconsole/tg3 configured.
SymptomWhen troubleshooting system, usage of "alt + sysrq + t" with netconsole/tg3 configured to take a system stack trace may cause the system to panic . This does not affect the normal operation of the system.
Solution/WorkaroundFixed in 2.6.18- kernel or higher
Bug No8253185
SummaryMachine becomes unresponsive during swap pressure, due to direct reclaim threads
AffectsSystems with heavy memory and I/O load
SymptomDuring periods of heavy memory or I/O load that forces the system to swap, the machine becomes unresponsive. In the case of Oracle RAC deployments, this could result in RAC evictions.
Solution/WorkaroundFixed in 2.6.18- kernel or higher
Bug No8277913
SummaryNetconsole module insertion fails with bonding on el5.3
Affectsnetconsole with bonding.
SymptomWith bonding enabled, "/etc/init.d/netconsole start" fails with the following error Initializing netconsole FATAL: Error inserting netconsole (/lib/modules//kernel/drivers/net/netconsole.ko): Invalid argument [FAILED]
Solution/WorkaroundFixed in 2.6.18- kernel or higher
Bug No8451369
SummaryIf oracle-validated rpm is installed from CD, it fails to update the numa settings in /boot/grub/menu.lst
Affectsx86_64 AMD processor based systems
SymptomRecommended settings for numa will not be set on AMD processor based systems
Solution/WorkaroundAfter install, bring up the system. Append numa=off to the lines "kernel " in /boot/grub/menu.lst. Reboot the system for changes to take effect.Fixed in OEL5U4.
Bug No6140224
Affects11gR1 and 11gR2
Symptomsqlplus fails with the following error message "cannot restore segment prot after reloc: Permission denied"
Solution/WorkaroundDisable selinux
Bug No6501138
SummaryORA-12751: CPU TIME OR RUN TIME POLICY VIOLATION under certain type of workloads.
Affects11gR1 performance
SymptomFollowing messages appear in the oracle trace files "Runtime exceeded 900 seconds"
Solution/WorkaroundReduce the load ( e.g: reduce no of users ) or enhance system configuration for that workload
Bug No7036544
SummaryDatabase instance startup fails when sga_target was set to multiples of 4096M
SymptomDatabase instance startup fails with the following error " ORA-12853: insufficient memory for PX buffers: current 0K, max needed 2640K and ORA-04031: unable to allocate 21544 bytes of shared memory ("large pool","unknown object","large pool","PX msg pool")"
Solution/WorkaroundFixed in, for set the parameter large_pool_size in init.ora or increase the sga_target size.
Bug No8451866
SummaryIncorrect multipath.conf setting affects RAC node failover. Settings(features = "1 queue_if_no_path") and/or (no_path_retry = queue) causes the node hang if io path fails. no_path_retry has to be set to the numeric value explicitly.
AffectsAll applications using device mapper multipath devices which have contingency plan in case of io path failure.
SymptomRAC node hangs if io path fails.
Solution/WorkaroundIn configuration file /etc/multipath.conf,set no_path_retry and polling_interval to the numeric values, for example, "no_path_retry=5" and "polling_interval=10" so as to disable queuing. These values depend on system workload.
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