单项选择题 While performing LVM maintenance， the volume group datavg1 was exported and re-imported.  The volume group is varied online， and the filesystems have been mounted. However， the database will not start.  What action would most likely resolve this problem？（）

单项选择题 TheClusterAdministratorwantstousediskheartbeatsasanon-IPnetwork.WhatVolumeGroupconsiderationmustbeaccountedforpriortoconfiguringdiskheartbeats？（）

单项选择题 A cluster with 10 adapters per node is converted to use IPAT address takeover vial IP aliasing.  During the conversion， the customer ran out of IP subnets in the allocated range.  What feature in HACMP can help resolve this issue？（）