Posts by Biju Muthusamy

Backup and Restore MySQL Database

Introduction: In this article, we are here to know different ways to generate the backup in the MySQL database server. It is essential to make regular backups of all data…

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MYSQL DB SWITCHOVER

INTRODUCTION: This doc will guide you through the process of performing a MySQL replication switchover, ensuring a smooth transition without any data loss. Let’s dive into the step-by-step instructions. Step…

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CRS-6706: Oracle Clusterware Release patch level (‘35319490) does not match Software patch level (‘xxxxxxxxx’). Oracle Clusterware cannot be started

Problem: After patching an Oracle 19.8 GRID_HOME on Oracle Restart setup with 19.20 RU patch [35319490], I was not able to start up Oracle Restart HAS due to mentioned error.…

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How To Open the Standby Database When the Primary Is Lost

In this case how to open your standby database in read/write mode when you don’t have any access (Lost) on Primary database. NOTE: Currently both Primary and Standby database are…

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Steps for modifying the scan name configuration in oracle RAC.

INTRODUCTION What is scan name for Oracle database? Single Client Access Name (SCAN) is a feature used in Oracle Real Application Clusters environments that provides a single name for clients to…

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Different ways to get the Explain Plan for a SQL ID 

1.To Display the execution plan of the last SQL statement executed by the current session  SET LINESIZE 150  SET PAGESIZE 2000  SELECT * FROM table (DBMS_XPLAN.DISPLAY_CURSOR);  2.To display the execution…

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ORACLE GOLDEN GATE INSTALLATION IN 19c DATABASE

Environment Details Server Name                         : primegg.localdomain OS Version                           : Oracle Linux Server release 7 Database Version                 : 19.0.0.0 GoldenGate Version             : 19.1.0.0.4 for oracle Oracle Home                        : /u01/app/oracle/product/19.0.0/dbhome_1 GoldenGate…

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How to Resolve Gaps in Data Guard Apply Using Incremental RMAN Backup

Step-1: Check the SCN of Standby ( Data guard ) database and Find the lowest SCN from the following Queries. SQL> SELECT CURRENT_SCN FROM V$DATABASE; CURRENT_SCN -------------- 1165261 SQL> select…

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Backing Up a Block Volume in OCI

Description: The backups feature of the Oracle Cloud Infrastructure Block Volume service lets you make a crash-consistent backup, which is a point in time snapshot of a boot volume without application interruption…

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Query to check the generation of all redo during the time period

Description: This query used to check the generation of all redo during the time period. Script: select to_char(begin_interval_time,'YYYY_MM_DD HH24:MI') snap_time, dhsso.object_name, sum(db_block_changes_delta) from dba_hist_seg_stat dhss, dba_hist_seg_stat_obj dhsso, dba_hist_snapshot dhs where…

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