Heard of Oracle DBA before? The term refers to the Oracle Database Administrator, wherein the latter works on Oracle database software. We all know that a DBA is essential for any organization to organize, integrate, and manage its data. The size of a database management system may vary and hence have many users at the same time. In such cases, DBA becomes a job where a pool of people shares their responsibilities.
2022 Oracle DBA: A Learning Guide
Are you looking forward to growing your skills or pursuing a career with Oracle Database? Here, you have landed at the right place. Let us have an insight into the Learning Guide with 2022 Oracle DBA.
What is a Database?
We understand that a database is an organized compilation of structured information which we can access, modify, or analyze competently. Talking of simple software applications like MS Word, MS Excel, or Spreadsheets, we know that they do not have the capability of handling huge data. Therefore, we need a reliable storage system wherein we can store or retrieve data quickly, as and when required. Only a DBA, who is well-versed in the skillset can handle these tasks. You are fortunate enough to have landed here as Oracle DBA Training in Noida can assist you to learn these skills.
Major Responsibilities of a DBA
As mentioned above, the primary task of a DBA is to ensure that there is protected access to the data to genuine users. For this, the DBAs, in association with other departments, work closely and make sure that the development of the database is smooth and effective, and hence organizes all the requirements of a business, productively.
However, particular skills are required to become a competent Database Administrator. Oracle DBA Course in Noida assists you in learning these skills for your bright career ahead. Let’s learn more about these skills.
The initial installation and configuration of Oracle, SQL, and other database software is the first role of a DBA. Once the hardware is configured and the operating system installed by the system administrator, it is the responsibility of a DBA to install and configure the Database software. The latter also fulfils the duty of maintenance, like updates and patches.
2. Managing Data Security
A DBA is responsible for handling the overall data security of an organization. They ensure that the data is protected from unauthentic use. They also ensure the consistency of data.
3. Extracting, Transforming, and Loading Data
The extraction, transformation, and loading of data is another responsibility of a DBA. This means that a large amount of data is extracted from several systems and effectively imported into a data warehouse. After this, the external data is prepared and transformed so that it can fit the format required to import it into a central warehouse.
4. Monitor Performance
After the Database is implemented by a DBA, their next chief responsibility lies in monitoring the database for any performance-related issues. If they notice any performance-related issues, they either need to re-configure the software or add more space to the hardware.
5. Handling Data
With the advancement of time and technology, companies have a huge amount of data to manage. This data may include documents, audio, videos, and even images. A DBA possesses such extensive skillsets to manage such huge data.
6. Creating Backup Plans for Data
Recovery Plans, Backups, and procedures are created by DBAs and they take the required action for this. They also ensure that every task is completed well in time and that the data is secure.
7. Recovery of Database
In case data is lost or server failure occurs, a DBA is responsible for the recovery of data using backups.
8. Database Integrity and Accessibility
A DBA ensures keeping the data secure from loss or corruption and ensures it is easily accessible and that it works properly. They also ensure that it is easy to use and provides maximum productivity.
9. User-Support Provider
A DBA assists and provides absolute support to users who are new or need assistance.
In case an issue arises in the system, a DBA is held responsible to troubleshoot instantly.
A DBA is expected to be good at communication, a team-builder, adaptable, flexible, have good organizational, problem-solving, and negotiation skills, has awareness of business requirements along with other skills.
Salary or Remuneration
The salary of a DBA is quite competitive. If you have the right skills and a passion to achieve heights with your talent, salary will never be a constraint. So just do not procrastinate your career further. Join the Oracle DBA Course in Noida and give your career a jumpstart.
Any of the developments are fairly minor and incremental. For example, in previous versions of App Express, the end date within a range was removed from the list. In version 5.1, it is including with Oracle 18c, the range end date is included as it is with all other elements of Application Express. Now, version 5.1 also enables end-users to access their scheduling with the arrow keys on the keyboard, an update to the interface that is tiny but usefully intuitive.
In the updated Oracle, other improvements are more important and can have a greater impact on your everyday operations. These five impacts us as has been the most important.
Integration with Microsoft Active Directory
The database will authenticate and authorize users from Microsoft’s Active Directory, beginning with Oracle 18c, without any intermediate directories being needed.
This is a modern, easier way for Active Directory to integrate. Intermediary software such as Oracle Enterprise Public Participation was needed in previous versions to achieve integration.
This new function is called Centrally Managed Users (CMU) and allows you to manage Oracle application access authorization for Active Directory users. When clients are authenticated in this way, Active Directory account policies are implemented by the Oracle database.
Schema Only Accounts
In the past, as a user profile that held certain objects, a schema could be linked more closely. But this also meant that a user could log in and have control over all artifacts in the schema.
With schema accounts only, clients are still unable to login to the schema directly. These kinds of profiles can be developed without a password and, much like a normal user profile, allowances or tasks can be allocated.
Server Draining Ahead of Planned Maintenance
The database will now fail over the sessions to another service or node in a RAC area, Oracle 18c. For example, if a service is transferred to another node, the database labels existing drainage sessions so that the application is not disturbed. Any new sessions will be guided to another usable operating service.
The database uses a collection of rules to assess the end of a session and can be deleted from the server. These rules include custom SQL link checks and access limits where no request is active or operation is finished and the session has one or more recoverable states that can be reconstructed during failover.
As a manner to improve performance by maintaining columnar-compressed database segments in storage, Oracle In-Memory was implemented in version 12c. In 18c, Oracle promotes in-memory development by introducing Automatic In-memory (AIM). By creating a heat map of the in-memory enabled items, Target operates and creates opportunities for more commonly used applications objects. Only when there isn’t enough space to add another item to the memory store will Goal kick in.
In previous versions of Oracle, it was determined to destroy the session that was operating SQL if a database administrator tried to cancel a SQL query. This meant the session had to be removed from the database and a new connection had to be started. In Oracle 18c, the SQL statement itself can now be deleted and scaled back.
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Business software giant Oracle is urging customers to update their systems in the October release of its quarterly Critical Patch Update (CPU), which fixes 402 vulnerabilities across various product families.
Well over half (272) of these vulnerabilities open products up to remote exploitation without authentication. That means that the flaw may be exploited over a network without requiring user credentials.
The majority of the flaws are in Oracle Financial Services Applications (53), Oracle MySQL (53), Oracle Communications (52), Oracle Fusion Middleware (46), Oracle Retail Applications (28) and Oracle E-Business Suite (27). But overall, 27 Oracle product families are affected by the flaws. Users can find a patch availability document for each product, available here.
“Oracle continues to periodically receive reports of attempts to maliciously exploit vulnerabilities for which Oracle has already released security patches,” according to the company’s release on Tuesday. “In some instances, it has been reported that attackers have been successful because targeted customers had failed to apply available Oracle patches. Oracle therefore strongly recommends that customers remain on actively-supported versions and apply Critical Patch Update security patches without delay.”
While details of the flaws themselves are scant, two of the critical vulnerabilities disclosed by Oracle rank the highest severity score – 10 out of 10 – on the CVSS scale.
These include a flaw in the self-service analytics component of Oracle Healthcare Foundation, which is a unified healthcare-analytics platform that is part of the Oracle Health Science Applications suite. The flaw (CVE-2020-1953), which can be remotely exploited without requiring any user credentials, requires no user interaction and is easy to exploit, according to Oracle. Affected supported versions include 7.1.1, 7.2.0, 7.2.1 and 7.3.0.
The second severe flaw (CVE-2020-14871) exists in the pluggable authentication module of Oracle Solaris, its enterprise operating system for Oracle Database and Java applications (part of the Oracle Systems risk matrix). The flaw is also remotely exploitable without user credentials, requires no user interaction and is a “low-complexity” attack. Versions 10 and 11 are affected.
Sixty-five of the vulnerabilities also had a CVSS base score of 9.8 (and six had a score of 9.4) out of 10, making them critical in severity.
Oracle did offer some workarounds, advising that for attacks that require certain privileges or access to certain packages, removing the privileges or the ability to access the packages from users that do not need the privileges may help reduce the risk of successful attack. Users can also reduce the risk of successful attack by blocking network protocols required by an attack.
However, both these approaches may break application functionality, and Oracle does not recommend that either approach be considered a long-term solution as neither corrects the underlying problem.
“Due to the threat posed by a successful attack, Oracle strongly recommends that customers apply Critical Patch Update security patches as soon as possible,” according to the company.
Oracle releases its CPUs on the Tuesday closest to the 17th day of January, April, July and October.
Previous quarterly updates have stomped out hundreds of bugs across the company’s product lines, including one in April that patched 405. There are also out-of-band updates; in June for instance, Oracle warned of a critical remote code-execution flaw in its WebLogic Server being actively exploited in the wild.
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So, do you have to become Oracle Certified? it has been a debatable issue for a short time, but one thing is certain: the Oracle Certification provides an accurate measure of your technical abilities.
Additionally, it gives you a foothold over people competing for the database administration positions you desire. Join Oracle online certification course and get complete guidance
Here are the steps to getting an Oracle Database certification:
The first step to getting your Oracle is getting the Associate Certification, which needs that the person passes two tests to become an Oracle Certified Associate (OCA). With this qualification, you’ll add junior management as a team member or an application developer. to urge the associate certification, you’ve got to pass in one among the three tests explained below and therefore the final “Oracle Database 11g: Administration I” test.Join best Oracle online training program to improve your skills.
Step 1: Take one among the subsequent three courses
Oracle Database 12c: SQL Fundamentals 1Z0-061
The examination tests ability to make, retrieve, maintain, and edit data during a database. Mainly, this involves a grasp of important database administration concepts like an electronic database. Additionally, the necessity to know and use SQL is extremely important, because the test would require you to demonstrate your SQL programming skills.
Oracle Database SQL Expert 1Z0-047
In general, this is often a complicated version of the “Introduction to Oracle9i SQL” test. you’ll need proficiency in 76 topics to achieve this exam. you would like to possess a high understanding of database objects, control privileges, and system-level queries. The questions require a deep understanding of SQL, and are multiple parts in nature, requiring the application of concepts instead of mere memorization of answers. Experience in database administration will offer you a notable advantage during this test.
Oracle Database 11g: SQL Fundamentals I 1Z0-051
This test is an improved version of the “Introduction to Oracle9i SQL” test. The content is newer and includes set and conditional operators, which are absent within the older version. Therefore, you’d be happier choosing this test over the previous.
Step 2: Oracle Database 11g: Administration I 1Z0-052
The test requires knowledge on the way to found out database environments and secure Oracle instances in any network environment. Other concepts needed to pass this exam include understanding of database backup and recovery, Oracle Database Architecture, also as the configuration of security instances. The questions require the application of concepts, not just memorization of data.
The professional certification allows you to manage large databases and develop large-scale database applications. In summary, to become an Oracle Certified Professional (OCP), you’ve got to require an instructor-led course, an exam, and a hands-on course.
Step 1: Be an Oracle Certified Associate
You must have the OCA certification as a pre-requisite for this course.
Step 2: Take an Exam
The second step within the OCP certification process is to require a course from a variety of about 50 courses and sit an exam. The list of those courses is out there on the Oracle site. The broad selection means you’ll choose the course that most accurately fits your training requirements. Note that you simply cannot meet the wants of this course through self-study; you’ve got to require an instructor-led class, a virtual class, or learn through training-on-demand.
Step 3: Submission of an Already Completed Course
In this step, you’re required to submit a previously completed course from an inventory of 21 courses. Alternatively, Oracle allows submissions from courses taken within the previous step.
Step 4: Oracle Database 11g: Administration II 1Z0-053
This is the ultimate exam within the OCP certification process. Once you pass this exam, you’ll proceed to the ultimate process.
Step 5: Submit a course completion form
Once you pass this exam, you only need to complete a course submission because of the final step within the OCP certification process.
This is the very best Oracle certification you’ll get. With this qualification, you’ll well-suited to figure in senior levels in IT departments handling sensitive database system issues and applications. you’ll need an OCP certification to urge started. then you’ll take a two-day exam then a hands-on course.
In general, Oracle Certified database administrators have the knowhow to run databases both at the junior and senior levels, counting on the certification level. Some people might argue that there’s little point to being certified because the process involves the memorization of theoretical concepts and taking a multiple-choice test. However, while there’s credence to the very fact that certification does little to catch up on the shortage of technical competence obtained through experience, it does give validity to such claims. As an Oracle Certified database services, potential employers and clients are more easily convinced of your capabilities within the field.
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Recently, researchers from Google proposed the solution of a very fundamental question in the machine learning community — What is being transferred in Transfer Learning? They explained various tools and analyses to address the fundamental question.
The ability to transfer the domain knowledge of one machine in which it is trained on to another where the data is usually scarce is one of the desired capabilities for machines. Researchers around the globe have been using transfer learning in various deep learning applications, including object detection, image classification, medical imaging tasks, among others.
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ML is type of AI
AI is a discipline , Machine Learning is tool set to achieve AI. DL is type of ML when data is unstructured like image, speech , video etc.
AI & ML was daunting and with high barrier to entry until cloud become more robust and natural AI platform. Entry barrier to AI & ML has fallen significantly due to
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