Problem RAC Installation

[mahesh arora]

we have oracle RAC running on rx4640 servers and working fine.

we need to install one more setup of rx4649-8 servers and we are facing problem. transcript of problem:
Failure in CSS initialization opening OCR.

Under ORA_CRS_HOME/log

# cd /oracle/app/product/10.2.0/crs_1/log
# ls -ltr
total 2
drwxrwx--- 2 oracle dba 96 Nov 29 15:04 crs
drwxr-xr-t 8 root dba 1024 Nov 29 15:08 testserver3
drwxr-xr-x 3 root sys 96 Nov 29 15:08 unknown

# cd unknown
# ls -ltr
total 2
drwxr-xr-x 2 root sys 96 Nov 29 15:11 client
-rw-rw-rw- 1 root sys 484 Nov 29 15:11 alertunknown.log

# more alertunknown.log
Oracle Database 10g CRS Release 10.2.0.1.0 Production Copyright 1996, 2005 Oracle. All rights reserved.
2010-11-29 15:08:21.907
[client(23761)]CRS-1006:The OCR location /dev/vgrac/rocr_2 is inaccessible. Details in /oracle/app/product/10.2.0/crs_1/log/un
known/client/ocrconfig_23761.log.
2010-11-29 15:08:22.045
[client(23761)]CRS-1001:The OCR was formatted using version 2.
2010-11-29 15:11:39.088
[client(23821)]CRS-1801:Cluster crs configured with nodes testserver3 testserver4 .


# cat /oracle/app/product/10.2.0/crs_1/log/unknown/client/ocrconfig_23761.log
Oracle Database 10g CRS Release 10.2.0.1.0 Production Copyright 1996, 2005 Oracle. All rights reserved.
2010-11-29 15:08:21.776: [ OCRCONF][1]ocrconfig starts...
2010-11-29 15:08:21.811: [ OCRCONF][1]Upgrading OCR data
2010-11-29 15:08:21.876: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2010-11-29 15:08:21.877: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2010-11-29 15:08:21.877: [ OCRRAW][1]proprioini: both disks are not OCR formatted
2010-11-29 15:08:21.877: [ OCRRAW][1]proprinit: Could not open raw device
2010-11-29 15:08:21.877: [ default][1]a_init:7!: Backend init unsuccessful : [26]
2010-11-29 15:08:21.901: [ OCRCONF][1]Exporting OCR data to [OCRUPGRADEFILE]
2010-11-29 15:08:21.901: [ OCRAPI][1]a_init:7!: Backend init unsuccessful : [33]
2010-11-29 15:08:21.901: [ OCRCONF][1]There was no previous version of OCR. error:[PROC-33: Oracle Cluster Registry is not configured]
2010-11-29 15:08:21.903: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2010-11-29 15:08:21.903: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2010-11-29 15:08:21.903: [ OCRRAW][1]proprioini: both disks are not OCR formatted
2010-11-29 15:08:21.903: [ OCRRAW][1]proprinit: Could not open raw device
2010-11-29 15:08:21.904: [ default][1]a_init:7!: Backend init unsuccessful : [26]
2010-11-29 15:08:21.905: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2010-11-29 15:08:21.906: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2010-11-29 15:08:21.908: [ OCRRAW][1]ibctx:1:ERROR: INVALID FORMAT
2010-11-29 15:08:21.908: [ OCRRAW][1]proprinit:problem reading the bootblock or superbloc 22

2010-11-29 15:08:21.909: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2010-11-29 15:08:21.910: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2010-11-29 15:08:21.983: [ OCRRAW][1]propriowv: Vote information on disk 0 [/dev/vgrac/rocr_1] is adjusted from [0/0] to [1/2]
2010-11-29 15:08:21.984: [ OCRRAW][1]propriowv: Vote information on disk 1 [/dev/vgrac/rocr_2] is adjusted from [0/0] to [1/2]
2010-11-29 15:08:22.045: [ OCRRAW][1]propriniconfig:No 92 configuration
2010-11-29 15:08:22.045: [ OCRAPI][1]a_init:6a: Backend init successful
2010-11-29 15:08:22.287: [ OCRCONF][1]Initialized DATABASE keys in OCR
2010-11-29 15:08:22.417: [ OCRCONF][1]Successfully set skgfr block 0
2010-11-29 15:08:22.418: [ OCRCONF][1]Exiting [status=success]...
#
please suggest.

[Turgay Cavdar]

Can you give more info about the environment?
What is the OS version?
Serviceguard version(if installed)?
How many nodes?

>>/dev/vgrac/rocr_2 is inaccessible
Is this logical volume is accessible? Permissions are ok?

[mahesh arora]

os is hp-ux 11.23.

Serviceguard is not installed.

there are 2 nodes

logical volume are accessible from both nodes.

permissions are 640. in fact we have tried with 777. but once we run script root.sh the permissions of ocr devices changes to 600.

[Turgay Cavdar]

Hi again,
If you don't have serviceguard (SGeRAC) installed how can you use SLVM? Is this a supported configuration?

[mahesh arora]

Thanks for the information.We do not have Service guard & ASM with us. Is it possible to install RAC without the above given softwares. is there any other way to make slvm.If yes then can you provide us the document which explains how it can be done.
Again thanks for all the help.The information is helping us a lot because we are doing the rac installation for the 1st time.

[Turgay Cavdar]

Please read 6.4 section on the document:

http://www.zaptron.com/chn/oracle%20database%2010g%20real%20application%20clusters%20r2%20(rac10g%20r2)%20on%20hp-ux%20installation.pdf

[Mike Chisholm]

If you are not using Serviceguard then probably the answers you seek are not to be found in this forum. Certainly it is possible to install Oracle RAC without Serviceguard but to do so you need to refer to Oracle documentation and ask questions to Oracle directly.
Most documents you will be pointed to here depend on Serviceguard to supply the underlying shared storage for data. If Serviceguard is not doing this via SLVM or CVM/CFS, then you need to do it another way as documented by Oracle in their manuals that discuss RAC installation.

[mahesh arora]

forgive my ignorance , this is our first time with oracle rac, is serviceguard or asm a must to install rac? is installation of rac is possible without both ?

thanks.

[Mike Chisholm]

You can install Oracle RAC without Serviceguard. There must be physical shared storage. The physical shared storage must be managed by a volume manager that understands shared storage and can present that shared storage up to the application layer without corrupting data.

Your option for a standalone RAC installation without Serviceguard is ASM over raw disks, however ASM does not support multipathing(I think this is true, I am not an Oracle expert) so if you use ASM over raw disk, you must use a product or operating system that provides the multipathing itself. Or run without it and risk losing access to the device if a path fails. This is really a question for Oracle experts, not a Serviceguard forum though.

[mahesh arora]

ok thanks

here comes the dumb question:

can we make shareable storage via hpux command set , we are using 11.23.if yes please give pointer towards procedure

we do not want to use serviceguard and as we understand asm would be available/applicable only after oracle 10g is installed, so the question is how to make disk shareable. do we have to install oracle 10g before we install oracle rac?

asm is not a standalone product.

thanks.