How do I check datafiles in backup mode?

How can I tell if my database is in backup mode?

if you are referring to Oracle database, and you're asking how to check whether the database is in backup mode (after issuing 'alter database BEGIN BACKUP'), then the query is: select * from v$backup; if one of the rows return with ACTIVE in the status column, then one of the tablespaces is in backup mode.

How can I check my datafiles status?

Check for Data Files That Need Recovery1Go to the cmd prompt.2Start sqlplus.3Connect sys/password as sysdba.4Run the following query: ... 5Note all file# numbers that require recovery. ... 6Connect sys/password as sysdba in sqlplus and type the following SQL command for each datafile:How to Get Data Files Back Online

How do I know if datafile is offline?

Connect sys/password as sysdba in sqlplus and run the following query to find which datafiles are offline: Select file# from v$datafile where status = 'OFFLINE'; Note all file# numbers that are returned. Then, while in sqlplus connected to the database as sys/password as sysdba.

How do I run an Oracle database in backup mode?

Backing Up Online Tablespaces Serially1Prepare a tablespace for online backup. ... 2Back up the data files in the tablespace. ... 3Take the tablespace out of backup mode. ... 4Repeat this procedure for each remaining tablespace.5Archive the unarchived redo logs so that the redo required to recover the tablespace backups is archived.Making User-Managed Database Backups - 11g Release 2 (11.2)