| 4593892 |
| repeated warnings in dmesg about lost ticks (it 80129/bz 139376) |
| usually seen on x86-64, both Intel and Opteron based systems |
| dmesg will have errors like: warning: many lost ticks. Your time source seems to be instable or some driver is hogging interrupts rip __do_softirq+0x4d/0xd0 |
| Fixed in U5 |
| |
| 5041764 |
| CFQ io scheduler can delay/hang io (bz 184535/it 88208 ) |
| heavy io access to raw/block devices |
| io requests will start to hang or take a long to complete RAC node could be evicted |
| Fixed in U4. Pre-U4, boot w/ elevator=deadline |
| |
| 5058952 |
| e1000 flow control defaults to none in the 2.6 kernel |
| e1000 network interfaces with heavy traffic |
| Network performance of the system is affected. For e.g: In the case of a RAC cluster, this may result in lost global cache blocks. |
| Fixed in U4. Pre-U4, load e1000 with FlowControl=1 (Rx) |
| |
| 5093059 |
| netdump doesn't load with bonding configured (it 85145) |
| bringing up netdump over a bonded interface |
| /var/log/messages will have an error: netlog: bond0 doesn't support polling, aborting. |
| Fixed in U4. |
| |
| 5136660 |
| bonding primary=ethX doesn't take effect |
| Bonding doesn't take effect |
| If we make a bond of eth5 and eth6, where eth6 is primary, on reboot eth5 will become active which makes server inaccessible. |
| Fixed in 2.6.9.42.0.3.0.2.EL kernel or higher |
| |
| 5333606 |
| rpm throws errors if selinux is disabled at OS installation and is enabled at runtime |
| error at rpm packages installs |
| during packages installation, errors indicate the scriplet failures |
| relabel the filesystems through 'touch /.autorelabel' or 'fixfilesrelabel' |
| |
| 5447805 (BZ 202186) |
| Kernel panic on 'aio_put_req' with x86_64 RHEL 4 AS U3 when all multipathed paths fails at the same time |
| multipath solutions |
| Kernel panic on aio_out_req |
| Fixed in kernel-2.6.9-42.5.EL.src.rpm (available from RedHat) or in kernel-smp-2.6.9.42.0.3.0.3.EL.x86_64.rpm (available from Oracle) |
| |
| 5463714 |
| system will hang if reboot or restart iscsi service without unmount ocfs2 partition on iscsi volume |
| system hang |
| restart iscsi service or reboot without umount iscsi volume cause system hang |
| unmount iscsi volume before restart iscsi service or reboot server |
| |
| 5593995 |
| Using Pro*C causes the system to run out of memory |
| Caused the system to hang. |
| The system hangs. |
| For OEL5U3, Remove references to pathnames that do not exist on your system in pcscfg.cfg. Fixed in OEL5U4. |
| |
| 5693201 |
| Application does not detect OEL4 as RHEL4 |
| Applications that use /etc/redhat-release for detection of distribution |
| Applications that use /etc/redhat-release for detection of distribution may error out |
| echo "Red Hat Enterprise Linux AS release 4 (Nahant Update 4)" > /etc/redhat-release |
| |
| 7240271 |
| Kernel panic occurs while starting up Oracle Enterprise Manager agent |
| 2.6.9-67.0.20.0.1.EL ( OEL ) or 2.6.9-67.0.20.EL ( RHEL ) kernels |
| Machine will experience a linux BUG, panic & reboot, when the EM Agent starts. |
| EL4.6 errata ( 2.6.9-67.0.20.0.2 and 2.6.9-67.0.22.0.1) kernel patches that have this fix. |
| |
| Redhat Bugzilla 202027 |
| Clear_kernel_mapping: mapping has been split. will leak memory |
| Seen on x86-64 Opteron based systems |
| /var/log/messages will have errors like clear_kernel_mapping: mapping has been split. will leak memory |
| Fixed in U5 |
| |
| 5240928 |
| warning messages in trace files during certain workloads with async io turned on |
| Performance under high i/o load |
| Following warning in trace files WARNING: ORACLE PROCESS RUNNING OUT OF OS KERNEL I/O RESOURCES |
| Fixed in 10.2.0.4. For 10g, versions lower than 10.2.0.4 ,apply patch 5452672. |
| |