Hi Karthik, If you are talking about SingleThreadModel (i.e. your servlet implements javax.servlet.SingleThreadModel), this does not guarantee that two different instances of your servlet won't be run at the same time. It only guarantees that each instance of your servlet will only be run by one thread at a time. See:
http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/SingleThreadModel.html If you are accessing a shared resource (a lucene index), you'll have to prevent concurrent modifications somehow other than SingleThreadModel. I think they've finally deprecated SingleThreadModel in the latest (may be not even out yet) servlet spec. -chris > On STANDALONE Usge of UPDATION/DELETION/ADDITION of Documents into > MergerIndex, the Code of mine > > > runs PERFECTLY with out any Problems. > > > But When the same Code is plugged into a WEBAPP on TOMCAT with a servlet > Running in SINGLE THREAD MODE,Some times > > > Frequently I get the Error as below --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]