Online Datafile Move : 12c Database New Feature

-rw-r-----. 1 oracle oinstall  52429312 Jul 16 09:49 redo03.log
-rw-r-----. 1 oracle oinstall  52429312 Jul 16 10:19 redo01.log
-rw-r-----. 1 oracle oinstall   5251072 Jul 16 10:24 users01.dbf
-rw-r-----. 1 oracle oinstall  92282880 Jul 16 10:45 temp01.dbf
-rw-r-----. 1 oracle oinstall 277880832 Jul 16 10:50 undotbs01.dbf
-rw-r-----. 1 oracle oinstall 828383232 Jul 16 10:51 system01.dbf
-rw-r-----. 1 oracle oinstall 859840512 Jul 16 10:51 sysaux01.dbf
-rw-r-----. 1 oracle oinstall  52429312 Jul 16 10:51 redo02.log
-rw-r-----. 1 oracle oinstall  17973248 Jul 16 10:52 control01.ctl
-rw-r-----. 1 oracle oinstall 828383232 Jul 16 10:52 system02.dbf

[oracle@cdb12c ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 12.1.0.1.0 Production on Tue Jul 16 10:51:53 2013

Copyright (c) 1982, 2013, Oracle.  All rights reserved.


Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL> alter database move datafile '/u01/app/oracle/oradata/test12c/system01.dbf' to '/u01/app/oracle/oradata/test12c/system02.dbf';

Database altered.

Linux display Error while running firefox

While opening firefox " Xlib: extension "RANDR" missing on display message appeared  and failed to open display on my machine. I installed the gtk2-engines and passed this interesting error.

[root@mytest ~]# firefox
Xlib:  extension "RANDR" missing on display "xx.xx.xx.xx:0.0".
Error: cannot open display: xx.xx.xx.xx:0.0

Xlib:  extension "RANDR" missing on display ":0"