What will happen to this script if there is no interruption?

Friends,

OS: RHEL AS 3
DB: 9iR2 (9.2.0.4)

I know RMAN is advised but... we use the user managed backup.

It's our managed user backup. I manually run this script for the last 3 years with no problems.
I'm now automate this script by passing through crontab.
now my question is... when executing this script if there is no interruption of any cause or by sudden break or disconnect sudden or any other...
What happens to this script? to corrupt my db?
If any interruption happens what should I do?

alter tablespace system begin backup;
host cp /u01/app/oracle/oradata/test/system01.dbf /u02/online_backup
alter tablespace system end backup;

alter tablespace undotbs1 begin backup;
host cp /u01/app/oracle/oradata/test/undotbs01.dbf /u02/online_backup
alter tablespace undotbs1 end backup;

alter tablespace CWMLITE begin backup;
host cp /u01/app/oracle/oradata/test/cwmlite01.dbf /u02/online_backup
alter tablespace CWMLITE end backup;

alter tablespace DRSYS begin backup;
host cp /u01/app/oracle/oradata/test/drsys01.dbf /u02/online_backup
alter tablespace DRSYS end backup;

alter tablespace INDX begin backup;
host cp /u01/app/oracle/oradata/test/indx01.dbf /u02/online_backup
alter tablespace INDX end backup;

alter tablespace test_DEFAULT begin backup;
host cp /u01/app/oracle/oradata/test/test_DEFAULT.dbf /u02/online_backup
alter tablespace test_DEFAULT end backup;

alter tablespace ODM begin backup;
host cp /u01/app/oracle/oradata/test/odm01.dbf /u02/online_backup
alter tablespace ODM end backup;

alter tablespace TOOLS begin backup;
host cp /u01/app/oracle/oradata/test/tools01.dbf /u02/online_backup
alter tablespace TOOLS end backup;

alter tablespace USERS begin backup;
host cp /u01/app/oracle/oradata/test/users01.dbf /u02/online_backup
alter tablespace USERS end backup;

alter tablespace XDB begin backup;
host cp /u01/app/oracle/oradata/test/xdb01.dbf /u02/online_backup
alter tablespace XDB end backup;

alter system switch logfile;

Thank you

for running this script if there is no interruption by any cause is by > sudden force or disconnecting sudden or any other...
What happens to this script? to corrupt my db?
If any interruption happens what should I do?

If there is power failure there is possibility that your data files may be corrupted.

If it happens during the backup operation and assuming that the file did not get corrupted, you can open without any problems

But you must check the State of the data file before the opening of the DB. IF none of the tablespace in backup mode Begin you must mount the database and issue the command end backup

Then your DB will come back

The script has nothing to do with corruption on the frame.

If you have files in backup mode you will not be able to open the DB

A simple demo

A simple could help you what happens if there is a stop in the waiver of the script

SQL> alter tablespace users begin backup;

Tablespace altered.

SQL> host ocopy D:\ORACLE\ORADATA\RMAN\RMAN\USERS01.DBF D:\ORACLE\ORADATA\RMAN\RMAN

SQL>  host ocopy D:\ORACLE\ORADATA\RMAN\RMAN\USERS01.DBF D:\ORACLE\ORADATA\RMAN

SQL> conn sys/sgdf@rman as sysdba
Connected.
SQL> shutdown immediate
ORA-01149: cannot shutdown - file 4 has online backup set
ORA-01110: data file 4: 'D:\ORACLE\ORADATA\RMAN\RMAN\USERS01.DBF'

*here i have shutdow the database from windows services while the tablesapce is in backup mode*

ORA-12571: TNS:packet writer failure
SQL>  conn sys/sgdf@rman as sysdba
ERROR:
ORA-12518: TNS:listener could not hand off client connection

SQL> startup

SQL> conn sys/sgdf@rman as sysdba
Connected.
SQL> select name from v$database;

NAME
---------------------------
RMAN

SQL> select count(*) from dba_objects;
select count(*) from dba_objects
                     *
ERROR at line 1:
ORA-01219: database not open: queries allowed on fixed tables/views only

SQL> SELECT * FROM V$BACKUP WHERE STATUS = 'ACTIVE';

     FILE# STATUS                                                    CHANGE#
---------- ------------------------------------------------------ ----------
TIME
----------
         4 ACTIVE                                                    1395431
09-15-2008

SQL> alter tablespace users end backup;

Tablespace altered.

SQL> alter database open;

Database altered.

So if the underlying file has been corrupted, then you must restore backup valid that's all

Published by: Maran Viswarayar Sep 15, 2008 18:50
Added the simple demo

Published by: Maran Viswarayar Sep 15, 2008 18:53

Tags: Database

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