Moving datafile to ASM

Question

Hello,
By mistake I created one data file in the local file system instead of ASM diskgroup. Initially I created the data file with 100MB, autoextensible to 100M,maxsize 2G, but then I stopped autoexntensible, so that less data file size would be better to move to ASM.
My concern is that now I am thinking if the datafile is full then I will move it to ASM diskgroup (script to move to ASM is already ready). I want to be sure if the data file is full, so that I move it peacefully to ASM, because otherwise datafile is not accessible if it is currently being written and moving to ASM. I dont want that stop of data written to data file, or the data file is full already and there is no risk that data fill be written to it or it will be inaccessible.
Please have a look and suggest how can I check that the data file is full actually and safe to move to ASM.
DB=11.2.0.2 EE, OS=RHL
SQL> select file_id,tablespace_name,bytes/1024/1024 "Bytes in MB",status,autoextensible,maxbytes/1024/1024 "Maxbytes in MB",user_bytes/1024/1024 from dba_data_files where file_id=62;
   FILE_ID TABLESPACE_NAME            Bytes in MB STATUS                       AUTOEXTENSIB Maxbytes in MB USER_BYTES/1024/1024
     62   KKJ                      300 AVAILABLE                   NO                    0               299Thank you.
Regards,

Answer 1

How to move a datafile from a file system to ASM [ID 390274.1]
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In order to move a datafile on a running active database the tablespace where the datafile resides must be placed offline.
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SQL> create tablespace test01
  2  datafile 'c:\test01.dbf' size 2g;
Tablespace created.
SQL>
select file#, name from v$ddatafile
36      C:\TEST01.DBF
rman target /
sql "ALTER DATABASE DATAFILE 36 OFFLINE";
backup as copy datafile 36 format '+DATA';
switch datafile 36 to copy;
recover datafile 36;
sql "alter database datafile 36 ONLINE";
exit;
-- fails with datafile as media recovery needs to be enabled
RMAN> sql "ALTER DATABASE DATAFILE 36 OFFLINE";
using target database control file instead of recovery catalog
sql statement: ALTER DATABASE DATAFILE 36 OFFLINE
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of sql command on default channel at 05/10/2012 12:18:46
RMAN-11003: failure during parse/execution of SQL statement: ALTER DATABASE DATAFILE 36 OF
ORA-01145: offline immediate disallowed unless media recovery enabled-- try again with tablespace, ran in seconds. but thats not the point. tablespace needed to be offline
RMAN> sql "ALTER TABLESPACE TEST01 OFFLINE";
using target database control file instead of recovery catalog
sql statement: ALTER TABLESPACE TEST01 OFFLINE
RMAN> backup as copy datafile 36 format '+DATA';
Starting backup at 10-MAY-12
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=82 instance=dprd1 device type=DISK
channel ORA_DISK_1: starting datafile copy
input datafile file number=00036 name=C:\TEST01.DBF
output file name=+DATA/dprd/datafile/test01.331.782914827 tag=TAG20120510T122026 RECID=1 S
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:26
Finished backup at 10-MAY-12
Starting Control File and SPFILE Autobackup at 10-MAY-12
piece handle=+FLASH/dprd/autobackup/2012_05_10/s_782914852.270.782914853 comment=NONE
Finished Control File and SPFILE Autobackup at 10-MAY-12
RMAN> switch datafile 36 to copy;
datafile 36 switched to datafile copy "+DATA/dprd/datafile/test01.331.782914827"
RMAN> recover datafile 36;
Starting recover at 10-MAY-12
using channel ORA_DISK_1
starting media recovery
media recovery complete, elapsed time: 00:00:00
Finished recover at 10-MAY-12
RMAN> sql "ALTER TABLESPACE TEST01 ONLINE";
sql statement: ALTER TABLESPACE TEST01 ONLINE
RMAN>