Query in adding a datafile to the tablespace ?

Hi All,
A small qry? Suppose i am having a datafile .DBF of Size 26 GB , and now i want to add another Datafile to the tablespace. Then how to stop insertion of data into that 26 GB file , while the 2nd Datafile should start accepting the data. Is it an automatic process or we have to issuse some commands ??. Kindly provide some document links.
Regards

Thanks for the reply sir
But if we declare 3 datafiles at the time of DB
Creation then how is three datafiles handled.
Insertion of data is simultaneous in all of the three
files or in a single file?????The Insertion of data in the datafile can't be handled be you. Oracle manages automatically. To elaborate further the freelist in the segments are response the data insertion. Better solution for your scenario is create tablespace with ample no. of datafiles and then export and import utility.
with regards
kccrga

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RLUO wrote:
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8.4.1.1 Adding a Tablespace and a Datafile When STANDBY_FILE_MANAGEMENT Is Set to AUTO
The following example shows the steps required to add a new datafile to the primary and standby databases when the STANDBY_FILE_MANAGEMENT initialization parameter is set to AUTO.
Add a new tablespace to the primary database:
SQL> CREATE TABLESPACE new_ts DATAFILE 't_db2.dbf'
2> SIZE 1m AUTOEXTEND ON MAXSIZE UNLIMITED;
Archive the current redo log so it will get copied to the standby database:
SQL> ALTER SYSTEM ARCHIVE LOG CURRENT;
Verify that the new datafile was added to the primary database:
SQL> SELECT NAME FROM V$DATAFILE;
NAME
/disk1/oracle/dbs/t_db1.dbf
/disk1/oracle/dbs/t_db2.dbf
Verify that the new datafile was added to the standby database:
SQL> SELECT NAME FROM V$DATAFILE;
NAME
/disk1/oracle/dbs/s2t_db1.dbf
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8.4.1.2 Adding a Tablespace and a Datafile When STANDBY_FILE_MANAGEMENT Is Set to MANUAL
The following example shows the steps required to add a new datafile to the primary and standby database when the STANDBY_FILE_MANAGEMENT initialization parameter is set to MANUAL. You must set the STANDBY_FILE_MANAGEMENT initialization parameter to MANUAL when the standby datafiles reside on raw devices.
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SQL> SELECT NAME FROM V$DATAFILE;
NAME
/disk1/oracle/dbs/t_db1.dbf
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% cp t_db2.dbf s2t_db2.dbf
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From Oracle Docs...

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Hello Gurus,
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BR1052E File odsd.data53 is already used by the database - this can cause problems in backups
I am attaching the log for your reference
Options for extension of tablespace PSAPODSD (1. file)
1 * Last added file name (lastfile) ....... [/oracle/PBW/sapdata3/odsd_52/odsd.data52]
2 * Last added file size in MB (lastsize) . [2000]
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4 ~ Raw disk / link target (rawlink) ...... []
5 - Size of the new file in MB (size) ..... [2000]
6 - File autoextend mode (autoextend) ..... [no]
7 # Maximum file size in MB (maxsize) ..... []
8 # File increment size in MB (incrsize) .. []
9 - SQL command (command) ................. [alter tablespace PSAPODSD add datafile '/oracle/PBW/sapdata2/odsd_53/odsd.data53' size 2000M autoextend off]
Standard keys: c - cont, b - back, s - stop, r - refr, h - help
BR0662I Enter your choice:
BR0280I BRSPACE time stamp: 2009-05-04 07.32.04
BR0663I Your choice: 'c'
BR0259I Program execution will be continued...
BR1052E File odsd.data53 is already used by the database - this can cause problems in backups
BR0669I Cannot continue due to previous warnings or errors - you can go back to repeat the last action
BR0280I BRSPACE time stamp: 2009-05-04 07.32.04
BR0671I Enter 'b[ack]' to go back, 's[top]' to abort:
BR0280I BRSPACE time stamp: 2009-05-04 07.32.10
BR0257I Your reply: 'b'
BR0673I Going back to the previous menu...
Please guide us to resolve this issue .
Imp - backup is completed successfully, I checked through sqlplus V$backup there is no active files
Thanks & Regards
Shishir

Hi,
login as ora<SID> and run this
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Arun

Query in adding a datafile to the tablespace ?

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