Oracle does not open log archive backup Oracle database method

Failure phenomenon:
How do I make a cold backup of an Oracle database in case of an emergency, without opening the Oracle log archive?
Solution:

A cold backup of the Oracle database, sorted as follows:

When do I have to use cold backup?

1. Database mode is not archive mode

2. For field protection

The process of cold backup:

1. First view the location of the backup file:

Data files, control files, log files

Select name from V$datafile
UNION ALL
Select name from V$controlfile
UNION ALL
Select member from V$logfile;

NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/orcl/system01.dbf
/u01/app/oracle/oradata/orcl/undotbs01.dbf
/u01/app/oracle/oradata/orcl/sysaux01.dbf
/u01/app/oracle/oradata/orcl/users01.dbf
/u01/app/oracle/oradata/orcl/control01.ctl
/u01/app/oracle/oradata/orcl/control02.ctl
/u01/app/oracle/oradata/orcl/control03.ctl
/u01/app/oracle/oradata/orcl/redo03.log
/u01/app/oracle/oradata/orcl/redo02.log
/u01/app/oracle/oradata/orcl/redo01.log

Parameter file:

CD $ORACLE _home/dbs/

Spfileorcl.ora

Password file:

CD $ORACLE _home/dbs/

Orapworcl

To stop a database:

Shutdown immediate

Copy all of the above files to the backup directory:

Mkdir-p/U01/BACKUP/COLDBK

To start a database:

Startup

Note: In non-archive mode, if the database has undergone log switching since the backup, a cold backup can only be used for incomplete recovery, the
database can only be restored to the backup point, and data from the backup point will be lost.