What if the rac environment adds data files to the file system by mistake?

This article is about how to add data files to the file system by mistake in the rac environment. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Change the data file offline or offline drop

Alter database datafile'/ home/oracle/andy.dbf' offline drop

View the status of the data file

Select file_name,status from dba_data_files

+ DATA/andy.dbf RECOVER

The offline drop data file is in recover state and normal state. The data will no longer be written to the data file in recover state, but the exppd and rman backup in this state will report an error.

Solution:

First, delete directly

Alter database datafile 'xxx' offline drop

Delete file$ where FILE#=7

Move the data file that added the error to the disk group

1 、 [root@racdb1 grid] # mv andy.dbf / home/grid/

2 、 [root@racdb1 grid] # chown grid.asmadmin andy.dbf

[root@racdb1 grid] # su-grid

[grid@racdb1 ~] $asmcmd

ASMCMD > cd data/racdb/datafile/

ASMCMD > ls

ASMCMD > cp / home/grid/andy.dbf. /

Copying / home/grid/andy.dbf-> + data/racdb/datafile/andy.dbf

ASMCMD > ls

SQL > alter database rename file'/ home/oracle/andy.dbf' to'+ data/racdb/datafile/andy.dbf'

Verify the status of the data file

SQL > select name,status from v$datafile

If it is still in recover state, it needs to be restored.

SQL > recover datafile 5

Media recovery complete.

SQL > alter database datafile 5 online

SQL > select name,status from v$datafile

+ DATA/andy.dbf online

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