Export system or sys schema

Question

If I am using imp/exp export schema system and sys, is it possible?

Answer 1

Girish Sharma wrote:
Sir,
As per your saying that SYS will not be included in export i tried following command and i got SYS schema exported:
In windows:
exp 'sys/pw@orcl as sysdba' owner=sys file=xx.dmp feedback=10 log=xx.dmp
In Linux:
expdp \'sys/pw@orcl as sysdba\' schemas=sys dumpfile=xx.dmp logfile=xx.logLike other has suggested, you can run exp/expdp doesn't mean you get it exported. See some example,
%exp sys  owner=sys file=test.dmp
Username: sys as sysdba
Password:
Connected to: Oracle Database 10g Enterprise Edition
Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
Export done in US7ASCII character set and AL16UTF16 NCHAR character set
server uses AL32UTF8 character set (possible charset conversion)
About to export specified users ...
. exporting pre-schema procedural objects and actions
. exporting foreign function library names for user SYS
. exporting PUBLIC type synonyms
. exporting private type synonyms
. exporting object type definitions for user SYS
About to export SYS's objects ...
. exporting database links
. exporting sequence numbers
. exporting cluster definitions
. exporting synonyms
. exporting views
. exporting stored procedures
. exporting operators
. exporting referential integrity constraints
. exporting triggers
. exporting indextypes
. exporting bitmap, functional and extensible indexes
. exporting posttables actions
. exporting materialized views
. exporting snapshot logs
. exporting job queues
. exporting refresh groups and children
. exporting dimensions
. exporting post-schema procedural objects and actions
. exporting statistics
Export terminated successfully with warnings.As you can see no objects are listed as exported.
This Oracle metalink has this explained
Schema's CTXSYS, MDSYS and ORDSYS are Not Exported
Doc ID: Note:228482.1
Also if you check $ORACLE_HOME/rdbms/admin/catexp.sql
which is the script to Creates internal views for Export/Import utility
You will see
CREATE OR REPLACE VIEW exu81obj AS
        SELECT  o$.*
        FROM    sys.obj$ o$, sys.user$ u$
        WHERE   BITAND(o$.flags, 16) != 16 AND
                /* Ignore recycle bin objects */
                BITAND(o$.flags, 128) != 128 AND
                o$.owner# = u$.user# AND
                u$.name NOT IN ('ORDSYS',  'MDSYS', 'CTXSYS', 'ORDPLUGINS',
                                'LBACSYS', 'XDB',   'SI_INFORMTN_SCHEMA',
                                'DIP',     'DMSYS', 'DBSNMP', 'EXFSYS',
                                'WMSYS')These database dictionary metadata schemas are deliberately excluded.
-hint- Maybe be by changing this script, you can get them included ;)
But don't take my word on that, changing DB dictionary is not supported in anyway.
>
Please quote your valuable suggestations because as per your saying i argued in a long debate with my friends that "we can not take export of sys's schema, because Ying sir is saying like that". I shall be highly informative on your feedback please.
I appreciate you take my word so seariously and I am glad I didn't let you down in this case.