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Linux Distribution Details
OSOracle Linux 4 Update 8 x86_64
Kernelkernel-xenU-2.6.9-89.0.0.0.1.EL.x86_64.rpm or higher
Virtualization TypeParavirtualized
 
Filesystems Tested
File SystemMount OptionsDetails
ext3NoneFor single instance database files.
Configuration Files
Comments
/etc/modprobe.conf alias eth0 xennet -
 alias scsi_hostadapter xenblk -
/etc/security/limits.conforacle soft nproc 131072 -
 oracle hard nofile 131072 -
 oracle soft nofile 131072# depending on size of db, these may need to be larger
 oracle soft core unlimited -
 oracle hard core unlimited -
 oracle hard nproc 131072 -
/etc/sysctl.confkernel.msgmax=8192 -
 kernel.msgmni=2878 -
 fs.file-max=327679 -
 net.ipv4.ip_local_port_range = 1024 65000 -
 kernel.shmmni = 4096 -
 kernel.msgmnb = 65536 -
 net.ipv4.tcp_syncookies = 1 -
 vm.lower_zone_protection=100 -
 kernel.sem=250 32000 100 142 -
 kernel.sysrq=1 -
 net.core.rmem_default=262144 -
 net.core.rmem_max=4194304 -
 net.core.wmem_default=262144 -
 net.core.wmem_max=262144 -
 fs.aio-max-nr=3145728 -
 kernel.shmmax=4398046511104# For 32bit architecture set (4GB-1) and for 64 bit architecture set 4TB
 kernel.shmall=1073741824 -
Miscellaneous
-
Oracle Software
OracleOracle Database 11g, Single Instance for Linux x86_64
Version11.1.0.6
PatchNone
 
Configuration Feedback
Bug No5333606
Summaryrpm throws errors if selinux is disabled at OS installation and is enabled at runtime
Affectserror at rpm packages installs
Symptomsduring packages installation, errors indicate the scriplet failures
Solutionrelabel the filesystems through 'touch /.autorelabel' or 'fixfilesrelabel'
 
Bug No5463714
Summarysystem will hang if reboot or restart iscsi service without unmount ocfs2 partition on iscsi volume
Affectssystem hang
Symptomsrestart iscsi service or reboot without umount iscsi volume cause system hang
Solutionunmount iscsi volume before restart iscsi service or reboot server
 
Bug No5593995
SummaryUsing Pro*C causes the system to run out of memory
AffectsCaused the system to hang.
SymptomsThe system hangs.
SolutionFor OEL5U3, Remove references to pathnames that do not exist on your system in pcscfg.cfg. Fixed in OEL5U4.
 
Bug No5693201
SummaryApplication does not detect OEL4 as RHEL4
AffectsApplications that use /etc/redhat-release for detection of distribution
SymptomsApplications that use /etc/redhat-release for detection of distribution may error out
Solutionecho "Red Hat Enterprise Linux AS release 4 (Nahant Update 4)" > /etc/redhat-release
 
Bug No8590136
SummaryUnder heavy memory load machine may OOM
AffectsBoth i386 and x86_64 architectures. Machines under heavy memory load
SymptomsSwap and Normal Zone memory is under utilized
SolutionAdd vm.min_free_kbytes=51200 in /etc/sysctl.conf and run sysctl -p
 
Bug No6501138
SummaryORA-12751: CPU TIME OR RUN TIME POLICY VIOLATION under certain type of workloads.
Affects11gR1 performance
SymptomsFollowing messages appear in the oracle trace files "Runtime exceeded 900 seconds"
SolutionReduce 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
Affects11.1.0.6
SymptomsDatabase 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")"
SolutionFixed in 11.1.0.7, for 11.1.0.6 set the parameter large_pool_size in init.ora or increase the sga_target size.
 
Bug No7135702
SummaryORA-15001 when shutting down the database instance
Affects11.1.0.7 database shutdown
SymptomsErrors in database alert log "Unexpected communication failure with ASM instance: error 15001 (ORA-15001: diskgroup""does not exist or is not mounted )"
SolutionApply patch 7135702
 
Bug No7272646
SummaryDatabase instance startup fails when memory_target value is >4096M
Affects11.1.0.7 database startup
SymptomsDatabase instance startup fails with the following error in the database alert log "error 27103 detected in background process, ORA-27103: internal error" and trace log error " Linux-x86_64 Error: 11: Resource temporarily unavailable"
SolutionApply patch 7520217 or reduce memory_target value.
 
Bug No8525592
SummaryIncorrect "SGA memory leak" errors encountered during the database shutdown
Affects11gR1
SymptomsDuring database shutdown, following errors are seen in the database trace files "ERROR: SGA memory leak detected.."
SolutionWorkaround is to ignore these errors.
 
 
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