how we accees apex job status in the vf page by using query logic any suggesttions plz ...thanks
When you execute the batch you get the Apex Job ID. Using that ID you can get the status of the batch. The object ApexAsuncJob hold the status of batch job.
You can query this object as:
AsyncApexJob a = [Select Id, Status, ExtendedStatus from AsyncApexJob where Id = :apexJobIDVar];
Use ActionPoller tag in vf to get status periodically.