Introduction Chaos engineering is all about breaking your application! It sounds counterproductive; however, it is the exact opposite. It is a methodology to test how resilient your application is in the actual production world. In this article, we will try to address the following: What is Chaos Engineering? Why is it needed? What are the […]
At one time, legacy systems were the backbone of technology, driven by industry standards created by IBM, Dell, COBOL, and others. Today, the situation is changing, and most legacy system users need to determine if these systems are an asset or a liability. They need to evaluate the good and the bad about their systems […]
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CVE-2021-4034 The polkit vulnerability that is supposedly present in the default configuration of all major Linux distributions has been confirmed by Oracle to be affecting Oracle Linux versions 7 and 8. Attackers can exploit this vulnerability and gain access to “root” gaining full privileges on the exploited system. At the time of writing this article, […]
ORA-48189: OS command to create directory failed while trying to start database using srvctl on Exadata So, yesterday, during a normal troubleshooting and maintenance at one of my customer, we wanted to restart a database running on Exadata. While the database was successfully brought down, we encountered ORA-48189 when we tried to bring the database […]
What is this vulnerability? Earlier today i.e. Dec 10, 2021, NIST released the details about CVE-2021-44228, a remote code execution vulnerability in Apache Log4j. Please refer to the National Vulnerability Database site for most up to date information. Impacted Oracle products and fixes Oracle has just now released the security alert and patch advisory. At […]
What is Application Performance Monitoring? Before we go to end-to-end monitoring, let us talk a little about Application Performance Monitoring (APM). APM is a way to monitor and manage an application’s performance and availability to detect, diagnose and in-turn remediate issues to maintain or, exceed user expectations. Though there are many products in market for […]
Overview Can’t believe I wrote this in December 2020 and forgot to publish.. Well, here you go! In the previous post, I talked about the new resource model in Oracle cloud for Exadata. In this post, we will see how to create a new Exadata instance in Oracle cloud using the new resource model. Creating […]
Oracle has just announced the limited time offer to learn and earn OCI and Autonomous certifications for free until December 2021. Available free certifications (Quick-list) Below is a quick-list of available free certifications for OCI: Oracle Cloud Infrastructure Associate-Level OCI Foundations 2021 Associate OCI 2021 Architect Associate OCI 2021 Cloud Operations Associate OCI Developer 2021 […]
SQL Server 2019 to Oracle 18c POC migration from SQL Server 2019 to Oracle 18c XE database. The process described in here works as described barring the additional permission that the repository schema/ user need (create materialized view). GRANT CONNECT, RESOURCE, CREATE SESSION, CREATE VIEW, create materialized view TO demo_migration IDENTIFIED BY demo_migration; I migrated […]
Oracle Cloud Support Center A very small post but, such a big news and unless I missed it, I did not see a big announcement on this. On July 21st, Oracle Support Center was made available. It can be used to create/ manage support requests, monitor OCI service status, access Oracle Cloud Community and guess […]
OCPU vs vCPU If you are familiar with Oracle could pricing or, considering Oracle Cloud or, even comparing the size/ cost between Oracle Cloud and other cloud providers, I am sure you come across the term OCPU. Oracle uses OCPU (Oracle Compute Unit) and other cloud providers uses vCPU. The usage of OCPU and not […]
Oracle Cloud Infrastructure – July 2021 New Releases (Database) Oracle Cloud infrastructure is continuously evolving with more and more interesting, exciting and useful features. There are so many updates to follow and keep a track of, hence I decided to write a post to consolidate all the updates for the month of July 2021, grouped […]
AIDE: Advanced Intrusion Detection Environment With the release of Exadata system software 19.1.0, Oracle added a bunch of improvements in Exadata security. AIDE is an one such new feature. It is enabled by default at the time of installation. The utility to manage AIDE is called “exadataAIDE” and is installed at: /opt/oracle.SupportTools. What is the […]
In my previous post, I talked about the latest release of Oracle Spacewalk 2.10 for Oracle Linux users. On December 22, 2020, Oracle came up with an early new year surprise with the release of Oracle Linux Manager 2.10. While this release kind of negates my previous post, the real surprise is that Spacewalk 2.10 […]
Why is it important to cross-skill? In today’s world, new technologies are emerging everyday. The existing technologies are not only being replaced by something better or, easier or, robust but these technologies themselves are being improved to do more and better in less time and with lesser burden on the end-users whether that means ease […]
The new Exadata resource model! The existing DBSystem service supports several types of database systems including bare metal and virtual machine DB systems with varying range of edition, size, price, and performance.Until now, this was also the only way to spin up an Exadata instance in Oracle cloud however, on December 11, 2020, Oracle announced […]
Despite being different, Security and Compliance often go hand-in-hand in an IT organization. While it is important to ensure that the IT environment is secure enough to protect against internal and external threats, compliance to applicable standards like HIPAA, PCI-DSS etc. for contractual or, regulatory requirements, holds equal importance.While these two topics span across multiple […]
ServiceNow-OMC Integration In one of the previous post, I talked about how to integrate Oracle Enterprise Manager with ServiceNow. If you are a Oracle Management Cloud user, you would want the same functionality with OMC as well. ServiceNow connector in OEMCC is synonymous to ServiceNow channel in Oracle Management Cloud. The channel gives you the […]
Object-level restore in Oracle RAC database using Commvault Commvault backup tool comes packed with number of cool features and support for multiple agents including Oracle RAC. One of the such feature is the ability to perform an object-level restore. Using Commvault, an administrator can restore/recover a single datafile, tablespace or, a table. The steps to […]
If an account is configured for password authentication however does not have an assigned password, it could be possible to log onto the account without authentication. If an account has an empty password, anyone could log in and run commands with the privileges of that account and cause some serious damage. As a Linux administrator, […]
The latest version of the ServiceNow ticketing connector comes pre-installed for Enterprise Manager Cloud Control 13c and does not need to be downloaded however, a set of pre-requisite actions must be performed before setting up the integration. Pre-requisite: A service account is created in ServiceNow and appropriate permissions assigned. In most cases: itil, soap_create, soap_update, soap_query roles […]
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IT-Noesis 