Oracle 11gR2 RAC HAIP特性相關的故障的判斷及解決方法

In this Document

Applies to:

Purpose

This note lists common causes of ASM start up failure with the following error on non-first node (second or others):

• alert_.log from non-first node

lmon registered with NM - instance number 2 (internal mem no 1)
Tue Dec 06 06:16:15 2011
System state dump requested by (instance=2, sid=19095 (PMON)), summary=[abnormal instance termination].
System State dumped to trace file /g01/app/oracle/diag/asm/+asm/+ASM2/trace/+ASM2_diag_19138.trc
Tue Dec 06 06:16:15 2011
PMON (ospid: 19095): terminating the instance due to error 481
Dumping diagnostic data in directory=[cdmp_20111206061615], requested by (instance=2, sid=19095 (PMON)), summary=[abnormal instance termination].
Tue Dec 06 06:16:15 2011
ORA-1092 : opitsk aborting process

Note: ASM instance terminates shortly after "lmon registered with NM"

If ASM on non-first node was running previously, likely the following will be in alert.log when it failed originally:

..
IPC Send timeout detected. Sender: ospid 32231 [oracle@ftdcslsedw01b (PING)]
..
ORA-29740: evicted by instance number 1, group incarnation 10
..

• diag trace from non-first ASM (+ASMn_diag_.trc)

kjzdattdlm: Can not attach to DLM (LMON up=[TRUE], DB mounted=[FALSE]).
kjzdattdlm: Can not attach to DLM (LMON up=[TRUE], DB mounted=[FALSE])

• alert_.log from first node

LMON (ospid: 15986) detects hung instances during IMR reconfiguration
LMON (ospid: 15986) tries to kill the instance 2 in 37 seconds.
Please check instance 2's alert log and LMON trace file for more details.
..
Remote instance kill is issued with system inc 64
Remote instance kill map (size 1) : 2
LMON received an instance eviction notification from instance 1
The instance eviction reason is 0x20000000
The instance eviction map is 2
Reconfiguration started (old inc 64, new inc 66)

If the issue happens while running root script. (root.sh or rootupgrade.sh) as part of Grid Infrastructure installation/upgrade process, the following symptoms will present:

• root script. screen output

Start of resource "ora.asm" failed

CRS-2672: Attempting to start 'ora.asm' on 'racnode1'
CRS-5017: The resource action "ora.asm start" encountered the following error:
ORA-03113: end-of-file on communication channel
Process ID: 0
Session ID: 0 Serial number: 0
. For details refer to "(:CLSN00107:)" in "/ocw/grid/log/racnode1/agent/ohasd/oraagent_grid/oraagent_grid.log".
CRS-2674: Start of 'ora.asm' on 'racnode1' failed
..
Failed to start ASM at /ispiris-qa/app/11.2.0.3/crs/install/crsconfig_lib.pm line 1272

• $GRID_HOME/cfgtoollogs/crsconfig/rootcrs_.log

2011-11-29 15:56:48: Executing cmd: /ispiris-qa/app/11.2.0.3/bin/crsctl start resource ora.asm -init
..
>  CRS-2672: Attempting to start 'ora.asm' on 'racnode1'
>  CRS-5017: The resource action "ora.asm start" encountered the following error:
>  ORA-03113: end-of-file on communication channel
>  Process ID: 0
>  Session ID: 0 Serial number: 0
>  . For details refer to "(:CLSN00107:)" in "/ispiris-qa/app/11.2.0.3/log/racnode1/agent/ohasd/oraagent_grid/oraagent_grid.log".
>  CRS-2674: Start of 'ora.asm' on 'racnode1' failed
>  CRS-2679: Attempting to clean 'ora.asm' on 'racnode1'
>  CRS-2681: Clean of 'ora.asm' on 'racnode1' succeeded
..
>  CRS-4000: Command Start failed, or completed with errors.
>End Command output
2011-11-29 15:59:00: Executing cmd: /ispiris-qa/app/11.2.0.3/bin/crsctl check resource ora.asm -init
2011-11-29 15:59:00: Executing cmd: /ispiris-qa/app/11.2.0.3/bin/crsctl status resource ora.asm -init
2011-11-29 15:59:01: Checking the status of ora.asm
..
2011-11-29 15:59:53: Start of resource "ora.asm" failed

Details

Case1: link local IP (169.254.x.x) is being used by other adapter/network

Symptoms:

• $GRID_HOME/log//alert.log

[/ocw/grid/bin/orarootagent.bin(4813)]CRS-5018:(:CLSN00037:) Removed unused HAIP route:  169.254.95.0 / 255.255.255.0 / 0.0.0.0 / usb0

• OS messages (optional)

Dec  6 06:11:14 racnode1 dhclient: DHCPREQUEST on usb0 to 255.255.255.255 port 67
Dec  6 06:11:14 racnode1 dhclient: DHCPACK from 169.254.95.118

• ifconfig -a

..
usb0      Link encap:Ethernet  HWaddr E6:1F:13:AD:EE:D3
        inet addr:169.254.95.120  Bcast:169.254.95.255  Mask:255.255.255.0
..

Note: it's usb0 in this case, but it can be any other adapter which uses link local

Solution:

Link local IP must not be used by any other network on cluster nodes. In this case, an USB network device gets IP 169.254.95.118 from DHCP server which disrupted HAIP routing, and solution is to black list the device in udev from being activated automatically.

Case2: firewall exists between nodes on private network (iptables etc)

No firewall is allowed on private network (cluster_interconnect) between nodes including software firewall like iptables, ipmon etc

Case3: HAIP is up on some nodes but not on all

Symptoms:

• alert_.log for some instances

Cluster communication is configured to use the following interface(s) for this instance
10.1.0.1

• alert_.log for other instances

Cluster communication is configured to use the following interface(s) for this instance
169.254.201.65

Note: some instances is using HAIP while others are not, so they can not talk to each other

Solution:

The solution is to bring up HAIP on all nodes.

To find out HAIP status, execute the following on all nodes:

If it's offline, try to bring it up as root:

If HAIP fails to start, refer to note 1210883.1 for known issues.


If the "up node" is not using HAIP, and no outage is allowed, the workaround is to set init.ora/spfile parameter cluster_interconnect to the private IP of each node to allow ASM/DB to come up on "down node". Once a maintenance window is planned, the parameter must be removed to allow HAIP to work.

Case4: HAIP is up on all nodes but some do not have route info

Symptoms:

• alert_.log for all instances

Cluster communication is configured to use the following interface(s) for this instance
169.254.xxx.xxx

• "netstat -rn" for some nodes (surviving nodes) missing HAIP route

netstat -rn
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
161.130.90.0     0.0.0.0         255.255.248.0   U         0 0          0 bond0
160.131.11.0     0.0.0.0         255.255.255.0   U         0 0          0 bond2
0.0.0.0      160.11.80.1     0.0.0.0         UG        0 0          0   bond0

The line for HAIP is missing, i.e:

169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 bond2

Note: As HAIP route info is missing on some nodes, HAIP is not pingable; usually newly restarted node will have HAIP route info

Solution:

The solution is to manually add HAIP route info on the nodes that's missing:

4.1. Execute "netstat -rn" on any node that has HAIP route info and locate the following:

4.2. Execute the following as root on the node that's missing HAIP route:

4.3. Start ora.crsd as root on the node that's partial up:.

The other workaround is to restart GI on the node that's missing HAIP route with "crsctl stop crs -f" and "crsctl start crs" command as root.

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References

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