diff --git a/src/DataExporter.cpp b/src/DataExporter.cpp
index 9854fa0613ee957a8921ae21dc075deda420f6fd..27f7f44368ae0fe57da897734d48e2ae45d04106 100644
--- a/src/DataExporter.cpp
+++ b/src/DataExporter.cpp
@@ -610,7 +610,7 @@ void DataExporter::importExportedTables(std::vector<std::string>& exportedTables
     {
         std::size_t found;
 
-        if((found=exportedTables.at(i).find(' ')) == std::string::npos)
+        if((found=exportedTables.at(i).find(',')) == std::string::npos)
         {
             std::stringstream errorStream;
             errorStream << "ExportedTables property has invalid key at "
@@ -619,8 +619,25 @@ void DataExporter::importExportedTables(std::vector<std::string>& exportedTables
         }
 
         std::string schema = exportedTables.at(i).substr(0, found);
+
+        if(schema.empty())
+        {
+            std::stringstream errorStream;
+            errorStream << "ExportedTables property has empty schema at "
+                << i << " position" << std::endl;
+            throw std::invalid_argument(errorStream.str());
+        }
+
         std::string table = exportedTables.at(i).substr(found+1, std::string::npos);
 
+        if(table.empty())
+        {
+            std::stringstream errorStream;
+            errorStream << "ExportedTables property has empty table at "
+                << i << " position" << std::endl;
+            throw std::invalid_argument(errorStream.str());
+        }
+
         INFO_STREAM << "DataExporter::importExportedTables() schema "
             << schema << " table " << table << endl;
 
@@ -641,7 +658,7 @@ void DataExporter::importAuthorisedUsers(std::vector<std::string>& authorisedUse
     {
         std::size_t found;
 
-        if((found=authorisedUsers.at(i).find(' ')) == std::string::npos)
+        if((found=authorisedUsers.at(i).find(',')) == std::string::npos)
         {
             std::stringstream errorStream;
             errorStream << "AuthorisedUsers property has invalid key at "
@@ -650,8 +667,25 @@ void DataExporter::importAuthorisedUsers(std::vector<std::string>& authorisedUse
         }
 
         std::string user = authorisedUsers.at(i).substr(0, found);
+
+        if(user.empty())
+        {
+            std::stringstream errorStream;
+            errorStream << "AuthorisedUsers property has empty user at "
+                << i << " position" << std::endl;
+            throw std::invalid_argument(errorStream.str());
+        }
+
         std::string password = authorisedUsers.at(i).substr(found+1, std::string::npos);
 
+        if(password.empty())
+        {
+            std::stringstream errorStream;
+            errorStream << "AuthorisedUsers property has empty password at "
+                << i << " position" << std::endl;
+            throw std::invalid_argument(errorStream.str());
+        }
+
         #ifdef VERBOSE_DEBUG
             INFO_STREAM << "DataExporter::importAuthorisedUsers() user "
                 << user << " password " << password << endl;
diff --git a/src/DataExporter.h b/src/DataExporter.h
index bf46ce2e2556e7315a3403dfbfd580afca37470d..633a03749da9e4b92f5d3ec70cd4a6fd5deb533b 100644
--- a/src/DataExporter.h
+++ b/src/DataExporter.h
@@ -79,11 +79,11 @@ class DataExporter : public TANGO_BASE_CLASS
     //Max number of worker thread allowed
     static const unsigned int MAX_WORKER_NUMBER = 100;
 
-    //Max number of database connection allowed
-    static const unsigned int MAX_DB_CONNECTION_NUMBER = 100;
-
-    //Max database port number allowed value
-    static const unsigned int MAX_DB_PORT = 65535;
+//    //Max number of database connection allowed
+//    static const unsigned int MAX_DB_CONNECTION_NUMBER = 100;
+//
+//    //Max database port number allowed value
+//    static const unsigned int MAX_DB_PORT = 65535;
 
 
 /*----- PROTECTED REGION END -----*/	//	DataExporter::Data Members