There is no data collected by the UnixAgent for AIX machines.
Below errors could be seen in the agent logs.
The above timeout errors were caused as there were tons of disks in the destination host which could not be collected within specified collection interval.
Below changes are required to be made to resume the collection.
vmparameter.x = "-Dcom.quest.remoteos.timeout.milliseconds=900000";
(remove the x with the next free number, for exmaple: vmparameter.0 or vmparameter.1 or vmparameter.2...)