How to handle row locks in Salesforce Apex Batch Jobs?

Hello,

I am writing complex batch job which runs for every hour and adds contacts to CampaignMember object, at the same time some other batch jobs are updating contacts in Campainmember object. Due to this we are encountering row locks and because of this row locks few records are not getting updated. Can any one suggest better solution other than using [select id from campaign limit 1 for update]

Thank you,

Jagannath