If you plan to install Oracle products, be prepared for surprise of random kind. :) The new Grid Infrastructure is no exception of this rule: I tried to install it on a SuSE Linux Enterprise Server (SLES) 10.
Quick facts about the setup:
- SLES 10 SP 2 64bit
- Oracle Grid Infrastructure 220.127.116.11 x86_64
- all devices are specified via UDEV symlinks like /dev/disk/by-id/scsi-1HITACHI_732342670003
Nearly everything went well, but $GRID_HOME/root.sh failed this way:
ORA-27091: unable to queue I/O ORA-15081: failed to submit an I/O operation to a disk ORA-06512: at line 4 PROT-1: Failed to initialize ocrconfig
(By the way, see how to repeat root.sh here.)
This just tastes like catastrophe: Why does a full-fledged SAN-provided LUN has I/O errors? The cross-check with “dd” cooled me down immediately, because it did not show any problems, reading and writing provided full power, no stalls and no errors. So calmly looking up My Oracle Support (fka Metalink) brought me to Article ID 955550.1 that’s talking about ASMLIB. I did not use ASMLIB because I don’t like it, but they solved their problem by an owner change of the device used for OCR. The trouble described there is, that the Oracle Clusterware does not accept OS user “oracle” just as a member in unix group “disk” that has rw permissions on the device, no, user “oracle” has to be the owner of the device!