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41 Sizing and Best Practices for Online Transaction Processing Applications with Oracle 11g R2 using Dell PS Series | BP1003
 The ASM instance on nodes will terminate as soon as the /dev/shm size is modified. Complete the
following to bring up ASM instances on database nodes.
Log in to each node as grid user and export ORACLE_SID with ASM instance. Enter the following
commands to bring up the ASM instance. Repeat the same steps on all database nodes.
[grid@oranode1 bin]$ export ORACLE_SID=+ASM1
[grid@oranode1 bin]$ pwd
/u01/app/11.2.0/grid/bin
[grid@oranode1 bin]$ ./ASMCMD
-bash: ./ASMCMD: No such file or directory
[grid@oranode1 bin]$ ./asmcmd
Connected to an idle instance.
ASMCMD> startup
ASM instance started
Total System Global Area 1135747072 bytes
Fixed Size 2260728 bytes
Variable Size 1108320520 bytes
ASM Cache 25165824 bytes
ASM diskgroups mounted
ASM diskgroups volume enabled
ASMCMD> ls
DB1DATA/
DB1FLASH/
DB1LOG1/
DB1LOG2/
OCRVOTE/
ASMCMD> exit
7.4.3 Oracle ASM configuration on RHEL 6.3
ASMLib is a free, optional software feature from Oracle that simplifies the management and discovery of ASM
disks, but Oracle changed the policy for RHEL 6, providing ASMLib software and support only for
Unbreakable Enterprise Kernel and the Red Hat compatible kernel for Oracle Linux.
Red Hat released an open-source package, kmod-oracleasm, beginning with RHEL 6.4 that can be installed
from the RHEL server supplementary channel. However, updates and support for this module must be
received from Red Hat and this is not supported by Oracle.