INFORMATION: Before start below steps start listener on both side
1. Start Source Database normal mode (open mode)
SQL> startup;
ORACLE instance started.
Total System Global Area 1593835520 bytes
Fixed Size 8621184 bytes
Variable Size 1375732608 bytes
Database Buffers 201326592 bytes
Redo Buffers 8155136 bytes
Database mounted.
Database opened.
2. start target database(standby database) in mount mode
SQL> startup mount;
ORACLE instance started.
Total System Global Area 1593835520 bytes
Fixed Size 8621184 bytes
Variable Size 1258292096 bytes
Database Buffers 318767104 bytes
Redo Buffers 8155136 bytes
Database mounted.
3. start MRP process
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION;
Database altered.
4. Validation
- Check MRP process is in running mode
SQL> select process, status, sequence# from v$managed_standby where process like '%MRP%';
PROCESS STATUS SEQUENCE#
--------- ------------ ----------
MRP0 APPLYING_LOG 10
- connect to DGMGRL prompt and check data gaurd configuration
[oracle@DB12C ~]$ dgmgrl sys@DB12C_STB as sysdba
DGMGRL for Linux: Release 12.2.0.1.0 - Production on Sat Aug 7 18:46:44 2021
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
Welome to DGMGRL, type "help" for information.
Password:
Connected to "DB12C_STB"
Connected as SYSDBA.
DGMGRL> show configuration;
Configuration - my_dg
Protection Mode: MaxPerformance
Members:
db12c - Primary database
db12c_stb - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS (status updated 12 seconds ago)