code: public final void setCatalog(String catalog) throws SQLException 
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
              Tr.debug(this, tc, "Set Catalog to " + catalog); 
          sqlConn.setCatalog(catalog);
          connectionPropertyChanged = true; 
      }
docs: Updates the value of the catalog property.
  
  @param catalog the new catalog.