RMAN Recovery - Hot Cloning
Active database duplication does not require backup of the source database. It duplicates the live source database to the
destination host by copying the database files over the network to the auxiliary (clone) instance. RMAN duplicate database
can copy the required files as image copies or backup sets.
Prerequisites :
Before you begin with this activity, make sure below items are addressed
- Source database is running in Archive log mode
- Creating Directories
- Creating pfile for clone database
- Check for space requirements on target server
- Servers are able to ping each other
- Orapasswd setup
- Tns setup
Target database: dev
Cloned database: TESDB
STEP 1 : Verifying the database name, Backups available in RMAN(Target Database)
[oracle@sdbt ~]$ export ORACLE_SID=dev
[oracle@sdbt ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Mon Oct 16 17:44:46 2023
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 713031680 bytes
Fixed Size 8624792 bytes
Variable Size 583009640 bytes
Database Buffers 113246208 bytes
Redo Buffers 8151040 bytes
Database mounted.
Database opened.
SQL> select name,dbid,open_mode,log_mode from v$database;
NAME DBID OPEN_MODE LOG_MODE
--------- ---------- -------------------- ------------
DEV 4176617848 READ WRITE ARCHIVELOG
STEP 2 : To check all the logfile,datafile,controlfile (Target Database)
SQL> select member from v$logfile;
MEMBER
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/dev/redo03.log
/u01/app/oracle/oradata/dev/redo02.log
/u01/app/oracle/oradata/dev/redo01.log
SQL> select name from v$controlfile;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/dev/control01.ctl
/u01/app/oracle/fast_recovery_area/dev/control02.ctl
SQL> select name from v$datafile;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/dev/system01.dbf
/u01/app/oracle/oradata/dev/sysaux01.dbf
/u01/app/oracle/oradata/dev/undotbs01.dbf
/u01/app/oracle/oradata/dev/users01.dbf
STEP 3 : To set the db_file_name_convert and log_file_name_convert (Target Database)
SQL> alter system set db_file_name_convert='/home/oracle/TESDB/oradata/data',
'/u01/app/oracle/oradata/dev/' scope=spfile;
System altered.
SQL> alter system set log_file_name_convert='/home/oracle/TESDB/oradata/archivelog',
'/u01/app/oracle/oradata/dev/' scope=spfile;
System altered.
STEP 4 : Creating Directories for clone db
[oracle@sdbt ~]$ mkdir TESDB
[oracle@sdbt ~]$ cd TESDB
[oracle@sdbt TESDB]$ ll
total 0
[oracle@sdbt TESDB]$ mkdir admin oradata
[oracle@sdbt TESDB]$ cd admin
[oracle@sdbt admin]$ pwd
/home/oracle/TESDB/admin
[oracle@sdbt admin]$ ll
[oracle@sdbt admin]$ mkdir pfile adump diag
[oracle@sdbt admin]$ ll
drwxr-xr-x. 2 oracle oinstall 6 Oct 16 17:52 adump
drwxr-xr-x. 2 oracle oinstall 6 Oct 16 17:52 diag
drwxr-xr-x. 2 oracle oinstall 6 Oct 16 17:52 pfile
[oracle@sdbt admin]$ cd ../
[oracle@sdbt TESDB]$ cd oradata/
[oracle@sdbt oradata]$ ll
total 0
[oracle@sdbt oradata]$ mkdir data control log archivelog
[oracle@sdbt oradata]$ ll
total 0
drwxr-xr-x. 2 oracle oinstall 6 Oct 16 17:53 archivelog
drwxr-xr-x. 2 oracle oinstall 6 Oct 16 17:53 control
drwxr-xr-x. 2 oracle oinstall 6 Oct 16 17:53 data
drwxr-xr-x. 2 oracle oinstall 6 Oct 16 17:53 log
[oracle@sdbt oradata]$ cd ../
[oracle@sdbt TESDB]$ cd admin/pfile/
[oracle@sdbt pfile]$ ll
total 4
-rw-r--r--. 1 oracle oinstall 1230 Oct 16 17:59 initTESDB.ora
STEP 5 : Creating Pfile for TESTDB (Source DB)
[oracle@sdbt pfile]$ pwd
/home/oracle/TESDB/admin/pfile
[oracle@sdbt pfile]$ cat initTESDB.ora
*.audit_file_dest='/home/oracle/TESDB/admin/adump'
*.audit_trail='db'
*.compatible='12.2.0'
*.control_files='/home/oracle/TESDB/oradata/ctl/control01.ctl',
'/u01/app/oracle/fast_recovery_area/TESDB/control02.ctl'
*.db_block_size=8192
*.db_file_name_convert='/u01/app/oracle/oradata/dev/','/home/oracle/TESDB/oradata/data'
*.db_name='TESDB'
*.db_recovery_file_dest='/u01/app/oracle/fast_recovery_area/TESDB'
*.db_recovery_file_dest_size=8016m
*.diagnostic_dest='/u01/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=devXDB)'
*.log_archive_format='%t_%s_%r.dbf'
*.log_file_name_convert='/u01/app/oracle/oradata/dev/',
'/home/oracle/TESDB/oradata/archivelog'
*.sga_target=678m
*.nls_language='AMERICAN'
*.nls_territory='AMERICA'
*.open_cursors=300
*.processes=300
*.remote_login_passwordfile='EXCLUSIVE'
*.undo_tablespace='UNDOTBS1'
[oracle@sdbt pfile]$ cd $ORACLE_HOME/dbs
[oracle@sdbt dbs]$ ll
total 20
-rw-rw----. 1 oracle oinstall 1544 Oct 16 17:45 hc_dev.dat
-rw-r--r--. 1 oracle oinstall 3079 May 15 2015 init.ora
-rw-r-----. 1 oracle oinstall 24 Mar 2 2022 lkDEV
-rw-r-----. 1 oracle oinstall 3584 Mar 2 2022 orapwdev
-rw-r-----. 1 oracle oinstall 3584 Oct 16 17:57 spfiledev.ora
STEP 6 : Ora passwd setup
[oracle@sdbt dbs]$ orapwd file=orapwdev password=abcd#123 force=y
[oracle@sdbt dbs]$ orapwd file=orapwTESDB password=abcd#123 force=y
STEP 7 : Making the clone Database in nomount state to duplicate the Database(source db)
[oracle@sdbt dbs]$ export ORACLE_SID=TESDB
[oracle@sdbt dbs]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Mon Oct 16 18:08:20 2023
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup nomount pfile='/home/oracle/TESDB/admin/pfile/initTESDB.ora';
ORACLE instance started.
Total System Global Area 713031680 bytes
Fixed Size 8624792 bytes
Variable Size 310379880 bytes
Database Buffers 385875968 bytes
Redo Buffers 8151040 bytes
------------------------------------------------------------------------------
STEP 8 : Connect rman for cloning
[oracle@sdbt TESDB]$ export ORACLE_SID=dev
[oracle@sdbt TESDB]$ rman target sys/abcd#123@dev auxiliary sys/abcd#123@TESDB
Recovery Manager: Release 12.2.0.1.0 - Production on Mon Oct 16 18:13:39 2023
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-12154: TNS:could not resolve the connect identifier specified
STEP 9 : Verifying Listener and tns entries in Source DB Entry
[oracle@sdbt TESDB]$ cd $ORACLE_HOME/network/admin
[oracle@sdbt admin]$ cat listener.ora
# listener.ora Network Configuration File:
/u01/app/oracle/product/12.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.23)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = dev)
(ORACLE_HOME = /u01/app/oracle/product/12.2.0/dbhome_1/)
)
(SID_DESC =
(SID_NAME = TESDB)
(ORACLE_HOME = /u01/app/oracle/product/12.2.0/dbhome_1/)
)
)
[oracle@sdbt admin]$ lsnrctl stop
LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 16-OCT-2023 18:40:49
Copyright (c) 1991, 2016, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.23)(PORT=1521)))
The command completed successfully
[oracle@sdbt admin]$ lsnrctl start
LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 16-OCT-2023 18:40:53
Copyright (c) 1991, 2016, Oracle. All rights reserved.
Starting /u01/app/oracle/product/12.2.0/dbhome_1//bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 12.2.0.1.0 - Production
System parameter file is /u01/app/oracle/product/12.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/diag/tnslsnr/sdbt/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.23)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.23)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 12.2.0.1.0 - Production
Start Date 16-OCT-2023 18:40:53
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/12.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/diag/tnslsnr/sdbt/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.23)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Services Summary...
Service "TESDB" has 1 instance(s).
Instance "TESDB", status UNKNOWN, has 1 handler(s) for this service...
Service "dev" has 1 instance(s).
Instance "dev", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
[oracle@sdbt admin]$ cat tnsnames.ora
# tnsnames.ora Network Configuration File:
/u01/app/oracle/product/12.2.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
DEV =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.23)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = dev)
)
)
TESDB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.23)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = TESDB)
)
)
[oracle@sdbt admin]$ tnsping TESDB 2
TNS Ping Utility for Linux: Version 12.2.0.1.0 - Production on 16-OCT-2023 18:46:32
Copyright (c) 1997, 2016, Oracle. All rights reserved.
Used parameter files :
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
HOST = 192.168.1.23)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = TESDB)))
OK (20 msec)
OK (0 msec)
[oracle@sdbt admin]$ tnsping dev 2
TNS Ping Utility for Linux: Version 12.2.0.1.0 - Production on 16-OCT-2023 18:46:38
Copyright (c) 1997, 2016, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = 192.168.1.23)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = dev)))
OK (0 msec)
OK (10 msec)
STEP 10 : Connect rman for cloning
[oracle@sdbt admin]$ export ORACLE_SID=dev
[oracle@sdbt admin]$ rman target sys/abcd#123@dev auxiliary sys/abcd#123@TESDB
Recovery Manager: Release 12.2.0.1.0 - Production on Mon Oct 16 18:49:40 2023
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
connected to target database: DEV (DBID=4176617848)
connected to auxiliary database: TESDB (not mounted)
RMAN> duplicate target database to 'TESDB' from active database;
Starting Duplicate Db at 16-OCT-23
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=250 device type=DISK
current log archived
contents of Memory Script:
{
sql clone "create spfile from memory";
}
executing Memory Script
sql statement: create spfile from memory
contents of Memory Script:
{
shutdown clone immediate;
startup clone nomount;
}
executing Memory Script
Oracle instance shut down
connected to auxiliary database (not started)
Oracle instance started
Total System Global Area 713031680 bytes
Fixed Size 8624792 bytes
Variable Size 310379880 bytes
Database Buffers 385875968 bytes
Redo Buffers 8151040 bytes
contents of Memory Script:
{
sql clone "alter system set db_name =
''DEV'' comment=
''Modified by RMAN duplicate'' scope=spfile";
sql clone "alter system set db_unique_name =
''TESDB'' comment=
''Modified by RMAN duplicate'' scope=spfile";
shutdown clone immediate;
startup clone force nomount
restore clone from service 'dev' primary controlfile;
alter clone database mount;
}
executing Memory Script
sql statement: alter system set db_name = ''DEV'' comment= ''Modified by
RMAN duplicate'' scope=spfile
sql statement: alter system set db_unique_name = ''TESDB'' comment= ''Modified by
RMAN duplicate'' scope=spfile
Oracle instance shut down
Oracle instance started
Total System Global Area 713031680 bytes
Fixed Size 8624792 bytes
Variable Size 310379880 bytes
Database Buffers 385875968 bytes
Redo Buffers 8151040 bytes
Starting restore at 16-OCT-23
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=254 device type=DISK
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service dev
channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:02
output file name=/home/oracle/TESDB/oradata/ctl/control01.ctl
output file name=/u01/app/oracle/fast_recovery_area/TESDB/control02.ctl
Finished restore at 16-OCT-23
database mounted
contents of Memory Script:
{
set newname for datafile 1 to
"/home/oracle/TESDB/oradata/datasystem01.dbf";
set newname for datafile 3 to
"/home/oracle/TESDB/oradata/datasysaux01.dbf";
set newname for datafile 4 to
"/home/oracle/TESDB/oradata/dataundotbs01.dbf";
set newname for datafile 7 to
"/home/oracle/TESDB/oradata/datausers01.dbf";
restore
from nonsparse from service
'dev' clone database
;
sql 'alter system archive log current';
}
executing Memory Script
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
Starting restore at 16-OCT-23
using channel ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service dev
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00001 to
/home/oracle/TESDB/oradata/datasystem01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:16
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service dev
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00003 to
/home/oracle/TESDB/oradata/datasysaux01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:16
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service dev
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00004 to
/home/oracle/TESDB/oradata/dataundotbs01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:04
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service dev
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00007 to
/home/oracle/TESDB/oradata/datausers01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
Finished restore at 16-OCT-23
sql statement: alter system archive log current
current log archived
contents of Memory Script:
{
restore clone force from service 'dev'
archivelog from scn 1528886;
switch clone datafile all;
}
executing Memory Script
Starting restore at 16-OCT-23
using channel ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: starting archived log restore to default destination
channel ORA_AUX_DISK_1: using network backup set from service dev
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=3
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:02
channel ORA_AUX_DISK_1: starting archived log restore to default destination
channel ORA_AUX_DISK_1: using network backup set from service dev
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=4
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
Finished restore at 16-OCT-23
datafile 1 switched to datafile copy
input datafile copy RECID=5 STAMP=1150397554
file name=/home/oracle/TESDB/oradata/datasystem01.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=6 STAMP=1150397554
file name=/home/oracle/TESDB/oradata/datasysaux01.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=7 STAMP=1150397555
file name=/home/oracle/TESDB/oradata/dataundotbs01.dbf
datafile 7 switched to datafile copy
input datafile copy RECID=8 STAMP=1150397555
file name=/home/oracle/TESDB/oradata/datausers01.dbf
contents of Memory Script:
{
set until scn 1528999;
recover
clone database
delete archivelog
;
}
executing Memory Script
executing command: SET until clause
Starting recover at 16-OCT-23
using channel ORA_AUX_DISK_1
starting media recovery
archived log for thread 1 with sequence 3 is already on disk as file
/u01/app/oracle/fast_recovery_area/TESDB/TESDB/archivelog/2023_10_16/o1_mf_1_3_lltg8r5b_.arc
archived log for thread 1 with sequence 4 is already on disk as file
/u01/app/oracle/fast_recovery_area/TESDB/TESDB/archivelog/2023_10_16/o1_mf_1_4_lltg8sfx_.arc
archived log file name=/u01/app/oracle/fast_recovery_area/TESDB/TESDB/
archivelog/2023_10_16/o1_mf_1_3_lltg8r5b_.arc thread=1 sequence=3
archived log file name=/u01/app/oracle/fast_recovery_area/TESDB/TESDB/
archivelog/2023_10_16/o1_mf_1_4_lltg8sfx_.arc thread=1 sequence=4
media recovery complete, elapsed time: 00:00:01
Finished recover at 16-OCT-23
Oracle instance started
Total System Global Area 713031680 bytes
Fixed Size 8624792 bytes
Variable Size 310379880 bytes
Database Buffers 385875968 bytes
Redo Buffers 8151040 bytes
contents of Memory Script:
{
sql clone "alter system set db_name =
''TESDB'' comment=
''Reset to original value by RMAN'' scope=spfile";
sql clone "alter system reset db_unique_name scope=spfile";
}
executing Memory Script
sql statement: alter system set db_name = ''TESDB'' comment= ''Reset to
original value by RMAN'' scope=spfile
sql statement: alter system reset db_unique_name scope=spfile
Oracle instance started
Total System Global Area 713031680 bytes
Fixed Size 8624792 bytes
Variable Size 310379880 bytes
Database Buffers 385875968 bytes
Redo Buffers 8151040 bytes
sql statement: CREATE CONTROLFILE REUSE SET DATABASE "TESDB" RESETLOGS ARCHIVELOG
MAXLOGFILES 16
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 8
MAXLOGHISTORY 292
LOGFILE
GROUP 1 ( '/home/oracle/TESDB/oradata/archivelogredo01.log' ) SIZE 200 M REUSE,
GROUP 2 ( '/home/oracle/TESDB/oradata/archivelogredo02.log' ) SIZE 200 M REUSE,
GROUP 3 ( '/home/oracle/TESDB/oradata/archivelogredo03.log' ) SIZE 200 M REUSE
DATAFILE
'/home/oracle/TESDB/oradata/datasystem01.dbf'
CHARACTER SET AL32UTF8
contents of Memory Script:
{
set newname for tempfile 1 to
"/home/oracle/TESDB/oradata/datatemp01.dbf";
switch clone tempfile all;
catalog clone datafilecopy "/home/oracle/TESDB/oradata/datasysaux01.dbf",
"/home/oracle/TESDB/oradata/dataundotbs01.dbf",
"/home/oracle/TESDB/oradata/datausers01.dbf";
switch clone datafile all;
}
Executing Memory Script :
executing command: SET NEWNAME
renamed tempfile 1 to /home/oracle/TESDB/oradata/datatemp01.dbf in control file
cataloged datafile copy
datafile copy file name=/home/oracle/TESDB/oradata/datasysaux01.dbf
RECID=1 STAMP=1150397603
cataloged datafile copy
datafile copy file name=/home/oracle/TESDB/oradata/dataundotbs01.dbf
RECID=2 STAMP=1150397603
cataloged datafile copy
datafile copy file name=/home/oracle/TESDB/oradata/datausers01.dbf
RECID=3 STAMP=1150397603
datafile 3 switched to datafile copy
input datafile copy RECID=1 STAMP=1150397603
file name=/home/oracle/TESDB/oradata/datasysaux01.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=2 STAMP=1150397603
file name=/home/oracle/TESDB/oradata/dataundotbs01.dbf
datafile 7 switched to datafile copy
input datafile copy RECID=3 STAMP=1150397603
file name=/home/oracle/TESDB/oradata/datausers01.dbf
contents of Memory Script:
{
Alter clone database open resetlogs;
}
executing Memory Script
database opened
Cannot remove created server parameter file
Finished Duplicate Db at 16-OCT-23
RMAN> EXIT
STEP 11 : Now the database has been successfully cloned we can verify the Database
[oracle@sdbt dbs]$ export ORACLE_SID=TESDB
[oracle@sdbt dbs]$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Mon Oct 16 18:55:56 2023
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> select name,dbid, open_mode, log_mode from v$database;
| NAME | DBID | OPEN_MODE | LOG_MODE |
|---|
| --------- | --------- | ---------------- | --------- |
| TESDB | 1904037664 | READ WRITE | ARCHIVELOG |
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