Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

is not coordinated correctly. For example, if only the Oracle Clusterware links are

down, Oracle Clusterware kills one set of nodes after the expiry of the

css-misscount interval and initiates the Oracle Clusterware and database recovery,

even before CVM and CFS detect the node failures. This uncoordinated recovery

may cause data corruption.

If you need additional capacity for Oracle communication on your private

interconnects, you can add LLT links. The network IDs of the interfaces connected

to the same physical network must match. The interfaces specified in the PrivNIC

or MultiPrivNIC configuration must be exactly the same in name and total number

as those which have been used for LLT configuration.

You can use the lltconfig command to add or remove LLT links when LLT is

running.

LLT links can be added or removed while clients are connected.

See the lltconfig(1M) manual page for more details.

Note: When you add or remove LLT links, you need not shut down GAB or the

high availability daemon, had. Your changes take effect immediately, but are lost

on the next restart. For changes to persist, you must also update the /etc/llttab

file.

To add LLT links

Depending on the LLT link type, run the following command to add an LLT

link:

■ For ether link type:

# lltconfig -t devtag -d device

[-b ether ] [-s SAP] [-m mtu]

■ For UDP link type:

# lltconfig -t devtag -d device

-b udp [-s port] [-m mtu]

-I IPaddr -B bcast

■ For UDP6 link type:

# lltconfig -t devtag -d device

-b udp6 [-s port] [-m mtu]

-I IPaddr -B mcast

Administering SF Oracle RAC and its components

Administering VCS