sequence table is full

  Explanation:  An attempt was made to create a sequence but no
  room remains in the Rdb root file for further sequence
  definitions.  Initially only 32 sequences can be created in a
  new or converted database.

  User Action:  Use the ALTER DATABASE statement to increase the
  size of the sequences table with the RESERVE ...  SEQUENCES
  clause.  Note that the value entered will be rounded to the next
  highest multiple of 32 so that a full page in the root file is
  used.