[Koha] Zebra Server - Cannot allocate Memory

Dear All I have been observing from last one week that our Koha search stop after 24hrs and when we restart Zebra then it starts working. log show the error as : : zebra server is failing with following msg 10:40:03-29/11 [fatal] fork [Cannot allocate memory] I have searched for the solution on google but no success. -- Thanks and Regards Sandeep Bhavsar Librarian Dr.V.N.Bedekar Institute of Management Studies Thane(W) 400601 MUMBAI. INDIA @@@@@@@@@@@@@@@@@@@@@@@@@@ email : sandeep.bhavsar@gmail.com Mob : 9987049099 elibrary :http://www.vpmthane.org/im/elib/main.htm @@@@@@@@@@@@@@@@@@@@@@@@@@