Saturday, 21 June 2025

Oracle 19C 2 Node RAC Dataguard complete setup step by step process

 Hi All,


In this post i am sharing Oracle 19C RAC 2 Node RAC Dataguard setup.

For this Lab  i have used 4 Virtual machines for Primary and standby servers configurations.

My Primary & Standby Environment details:

======================= =============



>> Primary node (we take as Production - its a live data / live business) .

>> we need to build the standby database for production High availability, in case of production server failures we can use standby server as primary server.

>> my Primary database is 2 nodes 19C RAC database with ASM storage, OS is OEL 7.

>> we need to configure standby servers with 2 Node 19C RAC with ASM Storage, OS OEL 7 .

on standby server we need to configure the Grid infrastructure on both standby nodes, then install the oracle 19C software only on both the standby servers. remain follow below steps to enable Dataguard.


>> Primary node host details /etc/hosts

[oracle@prodnode1 admin]$ cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6


#Public

192.168.0.21    prodnode1.localdomain.com       prodnode1

192.168.0.22    prodnode2.localdomain.com       prodnode2

192.168.0.23    prodnode3.localdomain.com       prodnode3


#Private

192.168.1.21    prodnode1-priv.localdomain.com  prodnode1-priv

192.168.1.22    prodnode2-priv.localdomain.com  prodnode2-priv

192.168.1.23    prodnode3-priv.localdomain.com  prodnode3-priv


#VIP

192.168.0.31    prodnode1-vip.localdomain.com   prodnode1-vip

192.168.0.32    prodnode2-vip.localdomain.com   prodnode2-vip

192.168.0.33    prodnode3-vip.localdomain.com   prodnode3-vip


#prod-scan (VIP)

192.168.0.41     prod-scan.localdomain.com      prod-scan

192.168.0.42     prod-scan.localdomain.com      prod-scan

192.168.0.43     prod-scan.localdomain.com      prod-scan


>> Standby node host details /etc/hosts



>> Primary node configuration ( archive log mode, force_loggining mode should be enable)


select name,force_logging,log_mode,FLASHBACK_ON from v$database;

shut immediate

startup mount


alter database archivelog;

alter database force logging;

alter database flashback on;


Check the db_unique_name 

SQL> show parameter db_uniq


NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

db_unique_name                       string      prod


set linesize 300 pages 100

col value for a45

col name for a25

select name, value

from v$parameter

where name in ('db_name',

'db_unique_name',

'log_archive_config',

'log_archive_dest_1',

'log_archive_dest_2',

'log_archive_dest_state_1',

'log_archive_dest_state_2',

'remote_login_passwordfile',

'log_archive_format',

'log_archive_max_processes',

'fal_client',

'fal_server',

'db_file_name_convert',

'log_file_name_convert',

'standby_file_management');




Configure the standby redo logs : ( 2+1*2) 

=========================

SQL> select GROUP#,THREAD#,BYTES/1024/1024,STATUS,MEMBERS FROM V$lOG;


 



add the standby redo logs >> these will useful only when you are using max availability and max protection modes.. not in the max performance mode..

ALTER DATABASE ADD STANDBY LOGFILE THREAD 1 group 5('+DATA/PROD/STANDBYLOGS/stdby_01.log') SIZE 200M;  etc ... add +1 extra for each thread for primary .. in your primary if you have 2 groups 4 threads for standby you need to create 2 groups with 3 threads each .

SQL> SELECT INST_ID, GROUP#,THREAD#,SEQUENCE#,ARCHIVED,STATUS FROM GV$STANDBY_LOG ORDER BY 2,1;

no rows selected

Thanks,
Srini


Friday, 30 May 2025

Oracle RAC DBA Online Training - 7th June 2025

 

 Dear All,

Those who want to learn Oracle 19C RAC DBA online training from starting to Expert level follow the below course content.

Course Duration:  7 weekends ( Sat & Sun)  3 hours / per day ( 42 hours )

 

Staring the training from  7th June 2025 to 20th Jul 2025 (Total 7 weekends)

Weekend sessions: Saturday: 8:00 AM to 11 AM IST , 10:30 PM to 1:30AM ET

                                     Sunday:  8:00 AM to 11 AM IST , 10:30 PM to 1:30AM ET

 

Demo Session :   Oracle RAC DBA Demo session Weekend batch

Time: 7th June 2025 08:00 AM IST

Join Zoom Meeting :: Those who are interested to join Oracle RAC DBA online training . Join below invite only on 7th June 2025 8AM IST to 8:45AM IST.

 

Join Zoom Meeting https://us06web.zoom.us/j/87615430065?pwd=mkv32hOVeLcAbCQ0LDbm9uiBY5JXn7.1 Meeting ID: 876 1543 0065 Passcode: 5cgUgL



Course Content:

 

WhatsApp group:

https://chat.whatsapp.com/JTC9OhT5Aq1ETTuByC3MEr

 

Contact no:  +91 9392634440 ( whatsapp) , mail id :  racsinfotech@gmail.com

Registration Form :: https://docs.google.com/forms/d/1L8gWNTCP3WvOlklR62oag3XGXCPqd_CBjbDl2AtsK1s/viewform

  RacsinfoTech Website: https://racsinfotech.com/

 

RAC Course Contents:

1. Introduction to Oracle Custer ware / Cluster ware Architecture

>> Standalone Vs RAC

>> What is Oracle Cluster ware

>> Oracle Cluster ware Architecture and Cluster Services

>> RAC One Node Vs RAC database

>> Online Relocation

>> Networking in Cluster ware

>> Cluster ware services Start-up and shutdown Sequences

>> what are OCR and Voting disk

 

2. Linux Installation and Configuration step by step on Oracle VM.

>> Oracle Virtual box 7 version setup on windows.

>> Installation of Linux OS (7.x)

>> OS Post Installation checks and Tasks

>> Node1 VM to Node2 VM Clone .

 

3. Network Setting and Configuration setup.

>> Public IP, Private IP , VIP and Scan IP Configuration

>> DNS Server Configuration

>> VM Shared Disk Creation process

>> how to create ASM Disks using VM shared disk's.

 

4. Cluster Installation and Configuration steps.

>> Custer Pre-installation Tasks

   > System requirements Checks

   > Kernel parameters checks

   > Create required directory ,groups and users for grid & db install

   > Execute the ./runcluvfy from any one of the nodes using below command

     ex: ./runcluvfy.sh stage -pre crsinst -n racnode1,racnode2 -verbose)

>> ssh user password less /equivalence configuration on cluster nodes.

>> Start the Oracle Cluster Installation and Configuration steps using ./gridSetup.sh

>> Cluster Post Installation checks

ex:: ./cluvfy stage -post crsinst -n racnode1,racnode2 -verbose

 

5. Oracle RAC DB Installation and Configuration steps

>> Pre-installation tasks

   > System requirements Checks

   > Kernel parameters checks

   > Create required directory ,groups and users for db install

   > ssh user password less connection  setup / equivalence configuration

>> Installation and Configuration RAC DB.

>> RAC DB software Post Installation Tasks

 

6. Create Oracle ASM Disk groups >> +OCR,+DATA & +ARCH etc disk groups.

 

7. Oracle RAC Database Creation and Configuration

>> Pre-installation for Oracle RAC DB Configuration

./cluvfy stage -pre dbcfg -n racnode1,racnode2 -d Oracle_home -verbose

./cluvfy stage -pre dbinst -n node_list [-r {11gR1 | 11gR2 | 12cR1 | 12cR2}]  [-osdba osdba_group] [-d Oracle_home] [-fixup [-fixupdir fixup_dir] [-verbose]

 

>> Oracle RAC Database Creation and Configuration using dbca / command line using response file.

>> Post Installation Tasks for Oracle RAC DB Configuration

 

8. Oracle ASM Introduction & Architecture

>> Oracle ASM Storage Components.

>> what is Mirroring and Stripping in ASM.

>> what are the ASM instance parameters.

>> Oracle ASM Administration process / steps.

 

9. Oracle ASM Disk Groups Administering

>> How to Administering Oracle ASM Disk Groups.

>> How to Preform Adding Disk to Disk group and Dropping Disks from disk groups.

>> How to Preform Disk group Rebalance and Rebalance Power limit in ASM.

 

10. RAC Database Administration and Oracle Cluster ware Administration

 

##Oracle Cluster ware Administration

>> What are OCR and Voting Disks in Cluster.

>> What are the Cluster Resource and Services

>> What are crsctl vs srvctl utilities / tools.

>> How to Restarting Oracle Cluster ware and Services.

>> How to Restarting Oracle Cluster Databases.

>> How to Rebooting Cluster Nodes.

>> what is VIP, SCAN IP , Private and Public IP In RAC.

 

11. RAC Database Administration

>> Oracle RAC specific parameters In Init/spfile.

>> Difference between pfile and spfile in RAC database

>> Use of password file for RAC database

>> How to manage the Redo Log Files and Control file.

>> UNDO & TEMP Tablespaces use cases.

 

12. Backup and Recovery in Oracle RAC Database

>> Backup strategy Understanding in RAC.

>> Types of Backups in RAC.

>> Recoveries scenarios in RAC.

 

13. Networking setup in RAC ( Listeners in Cluster ware / Local )

>> Grid / ASM Listeners.

>> Remote / SCAN Listeners (Remote Listeners).

>> Local Database Listeners (Local Listeners).

 

14. RAC Database Multitenant Architecture vs Non Multitenant Architecture

>> Oracle Multitenant Architecture In-detail.

>> what are CDB and PDB databases.

>> How to Install the Pluggable database(PDB).

>> How to Clone Pluggable Database(PDB).

 

15. ASM Cluster Filesystem (ACFS) Configuration and Administration

>> How to Configure ACFS in Linux.

>> How to Administering & Managing ACFS.

 

16. Patching Oracle RAC and RAC Databases

>> What are the OPatch Vs opatchauto utilities.

>> How to Patch Oracle Cluster ware.

>> How to Patch RAC Oracle Home.

>> How to Patch RAC Databases.

>> what is Datapatch.

 

17. Oracle Cluster/Grid and Database Upgradation from lower version to Higher

>> Pre-Upgrade steps.

>> How many ways we can perform db and grid  upgrade.

>> Post-upgrade steps.

 

18. How to perform Node Addition and Deletion in RAC

>> Pre-requisites for node addition.

>> Node addition steps

>> post node addition steps.

>> Pre-requisites for node deletion.

>> Node deletion steps

>> post node deletion steps.

 

19. How to Convert the Single Instance to RAC using DBCA / OEM / RCONFIG etc.

 

**20. Interview Preparation Tips and Mock Interviews to crack Realtime Interviews.

**21. Resume / CV Preparation Tips and suggestions.


Thanks,

Srini