You have to give us more details then that if you expect anyone to have a clue what might be going wrong...
* what does your code for initializing solr look like? * what does your soler home dir look like (ie: what files are in it) * what do all of your config files look like? * what is the full stack trace of these exceptions, and what does your code look like around the lines where these stack traces indicate your code is interacting with solr? * etc... http://wiki.apache.org/solr/UsingMailingLists : Date: Fri, 28 May 2010 11:19:49 +0200 (CEST) : From: jfmn...@free.fr : Reply-To: solr-user@lucene.apache.org : To: solr-user@lucene.apache.org : Subject: SolrException: No such core : : With embedded solr (1.3.0) sometime a SolrException happens. : I don't understand why : I have not been able to find a scenario. : : : org.apache.solr.common.SolrException: No such core: core0 : at org.apache.solr.client.solrj.embedded.EmbeddedSolrServer.request(EmbeddedSolrServer.java:112) : at org.apache.solr.client.solrj.request.UpdateRequest.process(UpdateRequest.java:217) : at org.apache.solr.client.solrj.SolrServer.deleteById(SolrServer.java:97) : : Regards : : JF : -Hoss