#2209 PG: data export config (always do in transaction)

plugins/org.jkiss.dbeaver.ext.postgresql/src/org/jkiss/dbeaver/ext/postgresql/model/PostgreDataSource.java

@@ -43,6 +43,7 @@ import org.jkiss.dbeaver.model.net.DBWHandlerConfiguration;
 import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
 import org.jkiss.dbeaver.model.struct.*;
 import org.jkiss.dbeaver.runtime.net.DefaultCallbackHandler;
+import org.jkiss.dbeaver.tools.transfer.IDataTransferProducer;
 import org.jkiss.utils.CommonUtils;
 
 import java.sql.Connection;
@@ -115,6 +116,14 @@ public class PostgreDataSource extends JDBCDataSource implements DBSObjectSelect
         props.put("sslpasswordcallback", DefaultCallbackHandler.class.getName());
     }
 
+    @Override
+    public Object getDataSourceFeature(String featureId) {
+        if (IDataTransferProducer.FEATURE_FORCE_TRANSACTIONS.equals(featureId)) {
+            return true;
+        }
+        return super.getDataSourceFeature(featureId);
+    }
+
     protected void initializeContextState(@NotNull DBRProgressMonitor monitor, @NotNull JDBCExecutionContext context, boolean setActiveObject) throws DBCException {
         if (setActiveObject) {
             PostgreDatabase activeDatabase = getDefaultObject();