{ { DISCONNECT [ FROM SESSION ]
  | { TIMEOUT integer | NOTIMEOUT }
  }
| { NODELAY | DEFAULT DELAY | DELAY integer }
| NEXT integer
| EXPIRE integer | NO EXPIRE
| parallel_clause
| THROUGH { [ THREAD integer ] SEQUENCE integer
          | ALL ARCHIVELOG
          | { ALL | LAST | NEXT } SWITCHOVER
          }
} [ DISCONNECT [ FROM SESSION ]
  | { TIMEOUT integer | NOTIMEOUT }
  | { NODELAY | DEFAULT DELAY | DELAY integer }
  | NEXT integer
  | EXPIRE integer | NO EXPIRE
  | parallel_clause
  | THROUGH { [ THREAD integer ] SEQUENCE integer
            | ALL ARCHIVELOG
            | { ALL | LAST | NEXT } SWITCHOVER
            }
  ] ...