first of all ur database in mount mode....
and then enable archieve log and then check
Datafile is a group of files in each table space in an Oracle database. Database files are all files that are found within the database.
to tell the future
Alter tablespace is the command
The recovery time after having otitis media surgery is about 2 weeks. Another word for otitis media surgery is middle ear surgery.
â–º Rename a Datafile in Oracle(10g):-SQL> select name from v$datafile; NAME--------------------------------------------------------------------------------/u01/app/oracle/product/10.2.0/oradata/abab/system.dbf/u01/app/oracle/product/10.2.0/oradata/abab/undo.dbf/u01/app/oracle/product/10.2.0/oradata/abab/sysaux.dbf/u01/app/oracle/product/10.2.0/oradata/abab/usr01.dbf/u01/app/oracle/product/10.2.0/oradata/abab/usr02.dbf/u01/app/oracle/product/10.2.0/oradata/abab/asm01.dbf/u01/app/oracle/product/10.2.0/oradata/abab/usr04.dbf/u01/app/oracle/product/10.2.0/oradata/abab/m123.dbf8 rows selected.SQL> alter tablespace msb read only;Tablespace altered.SQL> select TABLESPACE_NAME, status from dba_tablespaces;TABLESPACE_NAME STATUS------------------------------ ---------SYSTEM ONLINEUNDOTBS1 ONLINESYSAUX ONLINETEMP ONLINEUSR01 ONLINEUSR02 ONLINETEMP01 ONLINEINNER ONLINEASM ONLINEMSB READ ONLYTEMPORARY ONLINETABLESPACE_NAME STATUS------------------------------ ---------TSPUNDO ONLINE12 rows selected.SQL> alter tablespace msb offline;Tablespace altered.============================================================Work on OS level:-[oracle@abab-YYY-XXX abab]$ CD /u01/app/oracle/product/10.2.0/oradata/nisi/[oracle@abab-YYY-XXX abab]$ lsasm01.dbf redo1.log sysaux.dbf undo.dbf usr04.dbfm123.dbf redo2.log system.dbf usr01.dbfredo3.log temporary.dbf usr02.dbf[oracle@abab-YYY-XXX abab]$ cp m123.dbf mmm.dbf[oracle@abab-YYY-XXX abab]$ lsasm01.dbf redo1.log sysaux.dbf undo.dbf usr04.dbfm123.dbf redo2.log system.dbf usr01.dbfmmm.dbf redo3.log temporary.dbf usr02.dbf[oracle@abab-YYY-XXX abab]$============================================================SQL> alter database rename file2 '/u01/app/oracle/product/10.2.0/oradata/abab/m123.dbf'3 to4 '/u01/app/oracle/product/10.2.0/oradata/abab/mmm.dbf';Database altered.SQL> alter tablespace msb online;Tablespace altered.SQL> alter tablespace msb read write;Tablespace altered.SQL> select name, status from v$datafile;NAME STATUS------------------------------------------------------------ -------/u01/app/oracle/product/10.2.0/oradata/abab/system.dbf SYSTEM/u01/app/oracle/product/10.2.0/oradata/abab/undo.dbf ONLINE/u01/app/oracle/product/10.2.0/oradata/abab/sysaux.dbf ONLINE/u01/app/oracle/product/10.2.0/oradata/abab/usr01.dbf ONLINE/u01/app/oracle/product/10.2.0/oradata/abab/usr02.dbf ONLINE/u01/app/oracle/product/10.2.0/oradata/abab/asm01.dbf ONLINE/u01/app/oracle/product/10.2.0/oradata/abab/usr04.dbf ONLINE/u01/app/oracle/product/10.2.0/oradata/abab/mmm.dbf ONLINE8 rows selected.
places
A checkpoint performs the following three operations:Every dirty block in the buffer cache is written to the data files. That is, it synchronizes the datablocks in the buffer cache with the datafiles on disk. It's the DBWR that writes all modified databaseblocks back to the datafiles.The latest SCN is written (updated) into the datafile header.The latest SCN is also written to the controlfiles.The update of the datafile headers and the control files is done by the LGWR(CKPT if CKPT is enabled). As of version 8.0, CKPT is enabled by default.
Oracle Database support services. Data PatrolTech is a technology company in Pune that offers a range of IT services, including Oracle Database Services.These services involve managing and maintaining Oracle databases for businesses and organizations. Oracle Database Services typically include tasks such as installation, configuration, backup and recovery, performance tuning, security management, and troubleshooting.For information you visit our site.
Click START then ALL PROGRAMS then select VAIO RECOVERY
http://people.stern.nyu.edu/adamodar/New_Home_Page/datafile/capex.html
Neil Webster has written: 'DMU Datafile' 'European Locomotive Pocket Book' 'DMU and Light Rail Datafile' 'Locomotive Hauled Travel' 'European Loco Pocket Book' 'EMU Datafile' 'European Railways' 'Panchayati raj and the decentralisation of development planning in West Bengal' -- subject(s): Panchayat, Local government
It's called the 'recovery' partition. Various manufacturers will put recovery partitions on certain computer models and not others. Many (older) models came with recovery CDs or DVDs. Newer models expect you to burn recovery media from the recovery partition so that you can recover a system on a new hard drive if the old one fails. You can also try downloading from the computer company web site and burn it to recovery media.