<HTML><HEAD><META content="text/html; charset=x-user-defined" http-equiv="Content-Type"><style type="text/css"></style></HEAD><BODY><meta http-equiv="Content-Type" content="text/html; charset=x-user-defined" ><STYLE TYPE="text/css"> </STYLE> <meta http-equiv="Content-Type" content="text/html; charset=x-user-defined" ><STYLE TYPE="text/css"> </STYLE> <meta http-equiv="Content-Type" content="text/html; charset=x-user-defined" ><STYLE TYPE="text/css"> </STYLE>Dear All<br ><br >I shall greatly appreciate and honour, if anyone can suggest the solution to the below mentioned issue.<br ><br >The O/S of the m/c. is RHEL AS 3.0 with kernel 2.4.21-20. with x86_64 and taroon update 3. The RAM is 2GB with swap memory another 2GB. The server is functioning as mail server and this is the only application which is loaded onto the system with a third party vendor's mail application package.<br ><br >For quite some time the swappable memory itself was found to be consumed rather exhausted to its full quota of 2GB by the application resulting in no free memory for subsequents tasks to execute. As a result of this not only the application but also the system itself becomes frozen/hangs. The system becomes inaccessible even through remote machines using rlogin or putty etc to revive. Being the mail sever it is not desirable to have such frequent interruption in its service.<br ><br >1. The question is that how to retrieve/restore the swap memory back to its full quota?<br >2. How to restore the system when it attains hung state without using brute force / hot or cold boot?<br ><br >Your guidelines and suggestions shall be highly appreciable and valuable.<br ><br >with kind regards<br >s.mahalingam<br ><br >S.Mahalingam<br >Bioinformatics Centre<br >Centre for Cellular and Molecular Biology<br >Habsiguda, Uppal Road, Hyderabad 500 007, India.<br ><br >Ph:+91-40-27192773, 27192774, 27177814<br >+91-40-27160222 - 41 (20 Lines)<br >Ext: 2773, 2774<br >Fax: :+91-40-27160591, 27160311<br ><br >E-mail:<br >smal@ccmb.res.in<br >smal8@yahoo.com<br ><br >http://www.ccmb.res.in<br ></BODY></HTML>