code: public String getDbWorkUser() {
  
          String user = getExtProperty(CmsDbPoolV11.KEY_DATABASE_POOL + '.' + getPool() + ".user");
          if (CmsStringUtil.isEmptyOrWhitespaceOnly(user)) {
              return getDbCreateUser();
          }
          return user;
      }
docs: Returns the user of the database from the properties.<p>
  
  @return the database user used by the opencms core