export as SYSDBA in Oracle

 1)   How to export as SYSDBA

         

          exp \'sys/pwd as sysdba\'

  2)  Export using parameter file

          exp parfile=

  

create a file  exp.par  and insert the following line  and other export parameters

          USERID="sys/ as sysdba"

To export   a user must have

CREATE SESSION

EXP_FULL_DATABASE

IMP_FULL_DATABASE

Export utility is created by   CATEXP.SQL

When database is created CATALOG.SQL automatically runs CATEXP.SQL