Blog for Database and System Administrators

This blog is a collection of articles on analyzing and troubleshooting for all system and database administrators. These guides come from my experience, I hope they can help everyone.

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Oracle Database 20c

How To Audit All Access of Proxy Users with Unified Auditing

This article is intended to provide an example for how to audit access by proxy users using the Unified Auditing feature brought out in Oracle Enterprise Database 12c.  The sample… Read more »

Oracle    audit, oracle, oracle 12cR1, oracle 12cR2, Oracle 18c, Oracle Enterprise Edition, proxy, unified audit trail, user proxy
Oracle Database 20c

ALTER TABLE … MOVE PARTITION ONLINE license trap

The new features of Oracle 12c I had looked closer at possibility to move partitions online. You can move the partition while it is being accessed by DMLs and queries,… Read more »

Oracle    Advanced Compression, audit, license, oracle 12.2c, oracle 12c, Oracle 18c, Oracle 19c, partition, sub-partition, table
Linux Logo

How to disable Transparent Huge Pages on CentOS/RedHat

Hi there! I’d like to show you how to disable Transparent Huge Pages on CentOS/RedHat 7. First question you might ask – why do you even want to disable Transparent… Read more »

Linux    Centos, Disable, Huge Pages, Oracle Linux, Red Hat, Transparent Huge Pages

Oracle Database 18c Express Edition (XE) RPM Installation On Oracle Linux 6 (OEL6) and 7 (OEL7)

Oracle Database 18c Express Edition (XE) RPM Installation On Oracle Linux 6 (OEL6) and 7 (OEL7) This article describes the Oracle Database 18c Express Edition (XE) RPM installation on Oracle… Read more »

Oracle    Oracle 18c, Oracle Express Edition, Oracle XE, XE

Previews Roadmap to Oracle Database Version 19c

At the close of a presentation in which he announced general availability of the company’s latest Autonomous Database Cloud Service, Oracle Autonomous Transaction Processing, Oracle CTO and chairman Larry Ellison… Read more »

Oracle    Oracle 19c

Oracle 18c Advantages and disadvantages | Oracle 18c Releases

In this article also i will try to Oracle 18c advantages and disadvantages. I will try to explain the plans of future oracle releases which has explained by CTO of… Read more »

Oracle    A.I, Advanced Compression, Advanced Index, Advantages, Disadvantages, In-Memory, new features, Oracle 18c, RAC, RAT

Extending an Exadata X5-2 Eighth Rack to a Quarter Rack

What’s the different between an eighth rack and a quarter rack X5-2 Eighth Rack and X5-2 Quarter rack have the same hardware and look exactly the same. The only difference… Read more »

Oracle    Eighth Rack, exadata, Exadata X5-2, Quarter Rack, Upgrade

Oracle Database 18C: My preferred new features for DBAs

Oracle Databse 18c comes with some cool new features for DBAs. In this article I’ll list my preferred ones. Just one note: I think the name “Autonomous Database” is quite… Read more »

Oracle    BASIC INSTALLATIONS, MS ACTIVE DIRECTORY INTEGRATION, new features, Oracle 18c, Oracle ASM, PRIVATE TEMPORARY TABLES, READ-ONLY ORACLE HOMES, SQL CANCELLING

Directory Structure and Locations of Important Trace and Log Files of Enterprise Manager Cloud Control 13c

Because of the size and complexity of the Enterprise Manager Cloud Control software, while browsing through the folders on OMS server, you may feel confused and think that everything is… Read more »

Oracle    Directory Structure, Enterprise Manager Cloud Control 13c, log, log files, Trace

How to Change Lost SYSMAN Password On OEM Cloud Control 13c?

Lost your sysman password in Cloud Control 13c? In this article we will see how to change the password for the sysman user in Cloud Control 13c. To change lost… Read more »

Oracle    change password, OEM Cloud Control 13c, sysman

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