Posts by Ramkumar M

Identifying SQL Server Performance Issues

Detecting and resolving performance problems in SQL Server is crucial for database developers and administrators. Utilizing dynamic management views (DMVs) can provide insights into a server instance’s current state and…

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Security Care in AWS RDS

Running Oracle Database on Amazon Web Services (AWS) Relational Database Service (RDS) provides a variety of advantages, including scalability, flexibility, and managed services. However, in order to secure your sensitive…

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New Features of Oracle Database 23c

Oracle Database 23c, Oracle Corporation’s most recent release, includes a slew of new features and changes designed to provide organizations with expanded capabilities and improved performance. Overview: Enhanced machine learning…

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Cost estimate with AWS Pricing Calculator

How to create a cost estimate with the AWS Pricing Calculator?  Concepts:  Create a logical pricing group.  Create weekly, monthly, and yearly estimates for Amazon EC2 instances.    Step 1: …

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HUGE PAGES CONCEPTS

HUGE PAGES    What are Huge Pages? Linux Manages memory in pages while loading data from disk to memory or writing back to disk from memory. Huge pages is a…

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Tablespace Level Fragmentation — Defragmentation/Shrink A Big Tablespace In Oracle

The most efficient/effective way to defrag/shrink a big tablespace in oracle is to migrate the tables/indexes to new tablespaces. Here below are the steps: Step 1. find tablespace “BMW” whether…

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ORA-20000

ORA-20000 Programs that rely on PL/SQL can often be hit with run-time errors that occur due to faults in design, problems with coding, and a number of other issues. However,…

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ORACLE RAC STARTUP SEQUENCE

There are 2 ways we can do it as short and detail version . Short startup sequence : 1) OS 2) Cluster 3) ASM 4) INSTANCE 5) Listener 6) Service…

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ORACLE GOLDENGATE ARCHITECTURE

Oracle Goldengate supports the replication of data for various heterogeneous platforms. It provides support for IBM Informix and extended support for Microsoft SQL Server and MySQL. Oracle GoldenGate is  now …

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In Oracle 12c Sql tuning advisor is not running even though its enabled

Faced a strange issue in oracle 12c. In automated maintenance task, sql tuning advisor was enabled. However, it was still not running. Validated  dba_autotask_operation, that  “sql tuning advisor” is enabled.…

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