exceeded RDBLCK_MAX_USERS quota

  Explanation:   The  program  could  not  proceed   because   the
  RDBLCK_MAX_USERS  quota  for  the  Oracle  Rdb  system  has been
  exceeded.

  User Action:  Increase the maximum number of  users  allowed  on
  the  system  by  modifying the RDBLCK_MAX_USERS parameter in the
  rdblck.conf configuration file.