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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 x86_64 on IBM System X - x3550 (x336) and IBM System Storage DS8000 Family with Oracle Database 10g Release 2
Publication Date15-APR-08
Server PlatformIBM System X - x3550 (x336)
Storage ModelIBM System Storage DS8000 Family
Oracle SoftwareOracle Database 10g Release 2 ( for Linux x86_64
Linux DistributionOracle Enterprise Linux 5 x86_64
Server and Storage Platform Details
Server Model4 X IBM System X - x3550 (x336)
Server DetailsAdditional Server models covered by this configuration:IBM System x - x3400 (x226), x3500 (x236), x3800 (x260),x3650 (x346), x3850 (x366), IBM BladeCenter HS20 and HS21
Processors2 X Dual Core Intel(R) Xeon(TM) CPU 5160 3.00GHz
Memory4GB RAM
Network/Interconnect2 X Broadcom NetXtreme II BCM5708s
HBA Emulex PCI-E LPe11002 dual port , Dual port QLogic QLE2462 Fibre Channel HBA
Storage ModelDS8100 and DS8100 Turbo , DS8300 and DS8300 Turbo , IBM System Storage DS8000 Family
Switch Details
Switch ModelCisco Catalyst 6500-E
Switch TypeNetwork Switch
Additional Info.None
Switch ModelBrocade 2005-B32
Switch TypeFC Switch
Additional Info.None
Switch ModelCisco Catalyst 3500 XL(private.)
Switch TypeNetwork Switch
Additional Info.None
Linux Distribution Details
OSOEL 5 x86_64
Kernelkernel-2.6.18- or higher
Additional Packages Needed From Distribution
Oracle Packages
ocfs2-2.6.18- to the kernel version
ocfs2-tools-1.2.8-2.el5.x86_64.rpmRequired for DB on OCFS2
ocfs2console-1.2.8-2.el5.x86_64.rpmRequired for DB on OCFS2
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
oracleasm-2.6.18- to the kernel version
oracleasm-support-2.0.4-1.el5.x86_64.rpmRequired for DB on ASM
oracleasmlib-2.0.3-1.el5.x86_64.rpmRequired for DB on ASM
Other Packages
Configuration Files
Conf File Settings Comments
/etc/modprobe.confoptions hangcheck-timer hangcheck_tick=30 hangcheck_margin=180 hangcheck_reboot=1 
/etc/multipath.confdefaults { polling_interval 30 failback immediate no_path_retry 5 rr_min_io 100 path_checker tur user_friendly_names yes }Latest settings are available at rs=540&context=ST52G7&dc=D430&uid=ssg1S4000107&loc=en_US&cs=utf-8<=en
 device { vendor "IBM" product "2107900" path_grouping_policy group_by_serial } 
/etc/security/limits.conforacle 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 nproc 131072 
 oracle hard memlock 50000000 
 oracle soft nofile 131072# depending on size of db, these may need to be larger
 oracle hard nofile 131072 
 oracle hard core unlimited 
 oracle soft nproc 131072 
/etc/sysctl.confnet.ipv4.ip_local_port_range=1024 65000 
 kernel.shmmax=2074114048#Set to a value half the size of physical memory
 net.core.rmem_max=2097152# rmem_max can be tuned based on workload to balance performance vs lowmem usage
 net.core.rmem_default=262144# rmem_default can be tuned based on workload to balance performance vs lowmem usage
 kernel.sem=250 32000 100 142 
 kernel.msgmnb = 65536 
Filesystems Tested
Filesystem Mount Options Details
ASMNoneUsing Automatic Storage Management Library Driver (asmlib) for datafiles
RAWNoneocr and voting disk located on raw partitions, for configuration with datafiles on ASM storage.
OCFS2_netdev,datavolume,nointrDatafiles, ocr and voting disk files on OCFS2
Driver Modules
Driver ModuleHangcheck-timer module
Additional Info.The driver used is the hangcheck-timer module supplied with the distribution
Driver ModuleEmulex LightPulse Fibre Channel SCSI driver HBA
Additional Info.Firmware 2.50A6 (Z2F2.50A6). The driver used is the HBA driver module supplied with the distribution
Driver ModuleNetwork driver module (bnx2)
Additional Info.The driver used is the bnx2 driver supplied with the distribution
Driver ModuleQlogic HBA (QLE2462)
Additional Info.The driver used is the HBA 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 10g Release 2, Single Instance and Oracle Real Application Clusters (RAC) for Linux x86_64
Patches5940792 , 5526245 , 5452672 , 6614205
Configuration Feedback
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 No6075960
SummaryIf an ORACLE_HOME resides on an nfs partition, a reboot while Oracle is running may cause a panic
AffectsOracle deployments with Oracle_home on an nfs partition
SymptomIf the ORACLE_HOME resides on an nfs partition and the system is rebooted while an Oracle instance is still running, the system may panic. This does not cause a data corruption, but the system will need to be restarted
Solution/WorkaroundFixed in 2.6.18- kernel or higher. For other kernel versions lower than this, please shutdown the database instance before reboot of the server.
Bug No6079461
SummaryOCI program fails to execute with error: LIBNNZ10.SO: cannot restore segment prot after reloc: Permission denied
AffectsOCI programs when selinux is enabled.
SymptomIf selinux is enabled, running an OCI application may fail with the following error: cannot restore segment prot after reloc: Permission denied
Solution/WorkaroundDisable selinux(either via the selinux=0 boot option or by setting SELINUX=disabled in /etc/sysconfig/selinux)
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 No6219364
SummarySystems using kexec/kdump with Broadcom Tigon3 NICs will not be able to dump vmcore.
AffectsTroubleshooting of systems via kexec/kdump with Broadcom Tigon3 NICs.
SymptomWhen troubleshooting with kexec/kdump, the system throws errors when trying to bring up the ethernet interface when trying to connect to the system on to which the vmcore should be dumped. This does not affect normal operations.
Solution/WorkaroundFixed in 2.6.18- kernel
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 No5240928
Summarywarning messages in trace files during certain workloads with async io turned on
AffectsPerformance under high i/o load
Solution/WorkaroundFixed in For 10g, versions lower than ,apply patch 5452672.
Bug No5215593
Summaryunable to start RAC with db_cache_size > 4gb
AffectsRAC instances with > 4gb db_cache_size
Symptomnodes that started up correctly with may fail to startup with ORA-4031 errors in
Solution/WorkaroundFixed in For 10g, versions lower than, apply patch 5940792; or set _ksmg_granule_size=33554432 in the init.ora. Larger sga sizes may need a higher value.
Bug No5526245
Summarywarning messages in trace files from qmnc process
Affects10.2.0.2 and RAC
SymptomFollowing warning in trace files - KSXPLOOKUP: warning cnh incarnation number may be stale ...
Solution/WorkaroundFixed in For 10g, versions lower than ,apply patch 5526245.
Bug No6057703
SummaryORA-00600:[kclchkblkdma_3] in RAC instance
Affects10.2.0.3 RAC
Symptomthe user process may terminate leaving the above mentioned traces in alert/trace files
Solution/WorkaroundFixed in For 10g, versions lower than ,apply patch 6614205.
Bug No6682370
SummaryWhen configuring the cluster interconnect the interface name should not contain a "."
Affects10.2.0.3 cluster interconnect configuration
SymptomIf the interface name being used as the private interconnect contains a "." then 1. oifcfg getif does not display the confguration; and 2. The public interface gets used as the cluster interconnect
Solution/WorkaroundFixed in For 10g, versions lower than avoid using interface names with a "."
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.
Note: The above configuration can be deployed with Red Hat with the changes listed below:
os Kernel
RHEL 5 x86_64kernel-2.6.18-53.1.14.el5.x86_64.rpm or higher
Required Packages

Note: Oracle-validated for Red Hat is available from oracle-validated-1.0.0-18 onwards.

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