Hello Listers - We are installing Oracle clusterware 10.2.0.3 (migrating an existing application - so using the existing clusterware version) on RHEL 5. When we run root.sh we see the following errors: root@abdb-solace software]# /u01/app/oracle/product/10.2.0/clusterware/root.sh WARNING: directory '/u01/app/oracle/product/10.2.0' is not owned by root WARNING: directory '/u01/app/oracle/product' is not owned by root WARNING: directory '/u01/app/oracle' is not owned by root WARNING: directory '/u01/app' is not owned by root WARNING: directory '/u01' is not owned by root Checking to see if Oracle CRS stack is already configured Setting the permissions on OCR backup directory Setting up NS directories PROT-1: Failed to initialize ocrconfig Failed to upgrade Oracle Cluster Registry configuration abdb-solace RAC1-> cat /u01/app/oracle/product/10.2.0/clusterware/log/abdb-solace/client/ocrconfig_14054.log Oracle Database 10g CRS Release 10.2.0.1.0 Production Copyright 1996, 2005 Oracle. All rights reserved. 2011-08-15 16:53:38.024: [ OCRCONF][2521703568]ocrconfig starts... 2011-08-15 16:53:38.025: [ OCRCONF][2521703568]Upgrading OCR data 2011-08-15 16:53:38.035: [ OCRRAW][2521703568]proprioini: OCR configuration on disk 0 is not valid 2011-08-15 16:53:38.035: [ OCRRAW][2521703568]proprinit: Could not open raw device 2011-08-15 16:53:38.036: [ default][2521703568]a_init:7!: Backend init unsuccessful : [26] 2011-08-15 16:53:38.036: [ OCRCONF][2521703568]Exporting OCR data to [OCRUPGRADEFILE] 2011-08-15 16:53:38.036: [ OCRAPI][2521703568]a_init:7!: Backend init unsuccessful : [33] 2011-08-15 16:53:38.036: [ OCRCONF][2521703568]There was no previous version of OCR. error:[PROC-33: Oracle Cluster Registry is not configured] 2011-08-15 16:53:38.045: [ OCRRAW][2521703568]proprioini: OCR configuration on disk 0 is not valid 2011-08-15 16:53:38.046: [ OCRRAW][2521703568]proprinit: Could not open raw device 2011-08-15 16:53:38.046: [ default][2521703568]a_init:7!: Backend init unsuccessful : [26] 2011-08-15 16:53:38.055: [ OCRRAW][2521703568]proprioini: OCR configuration on disk 0 is not valid 2011-08-15 16:53:38.055: [ OCRRAW][2521703568]proprinit: Could not open raw device 2011-08-15 16:53:38.055: [ OCRAPI][2521703568]a_init:6b!: Backend init unsuccessful : [26] 2011-08-15 16:53:38.055: [ OCRCONF][2521703568]Failed to initialized OCR context. error:[PROC-26: Error while accessing the physical storage] 2011-08-15 16:53:38.056: [ OCRCONF][2521703568]Exiting [status=failed]... abdb-solace RAC1-> strace -fo /tmp/clsfmt.trc ./clsfmt ocr /dev/raw/raw11 clsfmt: failure at open skgfofi: Linux-x86_64 Error: 13: Permission denied Additional information: 3 abdb-solace RAC1-> dd if=/dev/raw/raw11 of=/tmp/raw11.dd bs=4096 count=1 1+0 records in 1+0 records out 4096 bytes (4.1 kB) copied, 0.000276 seconds, 14.8 MB/s abdb-solace RAC1-> exit Script done, file is /tmp/strace.out abdb-solace RAC1-> ls -l clsfmt -rwxr-xr-x 1 oracle oinstall 1699 Aug 15 16:31 clsfmt Any help is appreciated. -Upendra