SQL*Plus: Release 22.214.171.124.0 Production on Mon May 20 12:26:29 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
SQL> startup ;
ORA-00000: normal, successful completion
you need to investigate more about this error most the cause for this error :
1- Oracle Home contain "/" in the end of detestation.
2- if one not works for you, Then you need to check your networks included with listener