when i use connection pool i run this function search(LDAPUrl toGet),it will appear a error :can not close the connection so i try to correct the bug,it is no problem: LDAPConfigurationReader LDAPConfigurationReader = null; LDAPConfigurationReader=LDAPConfigurationReader.getInstance (); Map hashMap = null; try { hashMap = LDAPConfigurationReader.getConfiguration(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } connectionFactory=ConnectionFactory.getInstance(); poolManager=connectionFactory.connection(hashMap); LDAPConnection=connectionFactory.bindConnection (poolManager); LDAPSearchResults searchResults = LDAPConnection.search(LDAPConnection,myUrl ); public static LDAPSearchResults search(LDAPConnection LDAPConnection,LDAPUrl toGet) throws LDAPException { // Get a clone of default search constraints, method alters batchSize return search( LDAPConnection,toGet, null); } public static LDAPSearchResults search(LDAPConnection LDAPConnection,LDAPUrl toGet, LDAPSearchConstraints cons) throws LDAPException { if( Debug.LDAP_DEBUG) { Debug.trace( Debug.apiRequests, "LDAPConnection.search(" + toGet.toString() + ")"); } //LDAPConnection lconn = new LDAPConnection(); LDAPConnection.connect(toGet.getHost(),toGet.getPort()); if( cons == null) { // This is a clone, so we already have our own copy cons = LDAPConnection.getSearchConstraints(); } else { // get our own copy of user's constraints because we modify it cons = (LDAPSearchConstraints)cons.clone(); } cons.setBatchSize(0); // Must wait until all results arrive LDAPSearchResults toReturn = LDAPConnection.search(toGet.getDN(), toGet.getScope(), toGet.getFilter(), toGet.getAttributeArray (), false, cons); //lconn.disconnect(); return toReturn; } -- My MSN:zhoujianguo_leo@hotmail.com i from china shanghai