Blog | Pythian | Database (26)

Oracle

Opening the Door Without the Keys

This week, my DBA team fulfilled a request to restore 1 month old lost data. A review of the RMAN backups showed that ...

Oracle

Performance Settings of Concurrent Managers

This is the second article in a series about internals and performance of concurrent managers. In this post, we'll take ...

Oracle

Oracle Database Load Testing Tools – Overview

At Pythian's internal forum, someone just asked the following question: "The team here is evaluating DB load testing ...

MySQL

ODA Re-imaging Could Take Anywhere Between 20 and 120 Minutes

20 mins vs 2 hours Recently, I have noticed that re-imaging process on the second Oracle Database Appliance node took ...

Oracle

Proactive FRA Monitoring Using OEM Metrics

Oracle’s built-in thresholds for the Flash Recovery Area (FRA) are a bit like a strict landlord: they’re set at 85% and ...

Oracle

The Internal Workflow of an E-Business Suite Concurrent Manager Process

Concurrent processing is one of the key elements of any E-Business Suite system. It provides scheduling and queuing ...

Microsoft SQL Server

Troubleshooting Transactional Replication Latency Using Agent Statistics

In this blog post, we will look at how you can leverage the Agent statistics to troubleshoot the replication latency ...

Oracle

Oracle Database 12c: Network Recovery in RMAN

Over the past 8 months, I have had the pleasure of working on a soon-to-be-released update for our popular Beginner's ...

Oracle

Do You Know If Your Database Is Slow?

The time to respond There was a question at Pythian a while ago on how to monitor Oracle database instance performance ...

Oracle

How to Update JDK on Oracle Enterprise Linux from Version 1.6 to 1.7

Intro JDK is the environment to develop Java programs, and updating Java on Linux boxes is a requirement which often ...

Oracle

Extending OEM 12c with Oracle Application Management Pack

Mother, mother Oracle. I have heard you call… Wanted to sail upon your cloud (control) since 7.3.4… You’ve seen it all, ...

Oracle

Creating a Physical Standby with RMAN Active Duplicate in 11.2.0.3

Creating a physical standby database is a fundamental skill for any DBA, but tutorials often skip over the "why" or ...

Oracle

Database 12c: What's New with Data Pump? Lots.

This article will discuss some of the new stuff on board with Oracle Database 12c and one of our favorite tools: data ...

Oracle

Exadata Join Offloading in Action

One of the biggest selling features of Oracle's flagship engineered system - Exadata - is the storage offloading ...

Oracle

Duplication: divide et impera

Every Monday morning starts with the same routine: refreshing QA databases from PeopleSoft production. Even though the ...

Oracle

How to Fix a Target with a Pending Status in OEM 12cR2

The other day we had a situation with an OEM 12cR2. We performed maintenance in a 2-node cluster and both instances ...

MySQL

Hard Drive: Inner or Outer?

To be precise, I wonder if OUTERmost tracks of a spinning HDD are faster than INNERmost tracks. Should we put physical ...

Oracle

Configuring OID 11.1.1.6 Connector in OIM 11.1.2

Configuring OID 11.1.1.6 connector in OIM 11.1.2 for direct provisioning: There is a big change in the way direct ...

Oracle

Be Warned: cmclean.sql Is Dangerous!

Description I’m sure one of the most popular scripts for Apps DBAs on My Oracle Support is cmclean.sql from MOS Article ...

Oracle

Duplicate Database from Active Database — Just Works!

My friend Øyvind Isene suggested that I store a DUPLICATE RMAN script that works in a safe place in this tweet. @yvelik ...

Oracle

Managing Oracle on Windows: Where’s my Oratab?

Introduction If you manage Oracle on Windows, you probably have wondered why it is so difficult to work out which ...

Oracle

Data Guard Cascaded Standby Support in DB12c

Oracle Database 12c brought more than 500 new features, and many of them are related to Data Guard enhancements. Along ...

Oracle

Database Validation in Data Guard 12c

Introduction to validate database in db12c DGMGRL was never difficult to use; however, it was not providing enough ...

Microsoft SQL Server

How to Collect Cluster Information Using TSQL

Context Sometime back, I was involved in a project that consisted in collecting information for the servers we are ...

Oracle

Connection Resets When Importing from Oracle with Sqoop

I’ve been using Sqoop to load data into HDFS from Oracle. I’m using version 1.4.3 of Sqoop, running on a Linux machine ...

Oracle

SQL for Pattern Matching in Oracle 12c

Oracle 12c is out! And with it, a myriad of new features that we’ll be learning and playing with in the months and ...

Oracle

Are You Paying Too Much for Database Support?

Context Let’s face it: Upgrading your database to the latest and greatest release is not the top item on your VP of ...

Oracle

How to Tune Using v$mystat

Situation When reviewing the performance of some queries, it is sometimes useful to review the session statistics for ...

Oracle

Getting ready to install EBS 12.2 Vision: Quickstart notes

Getting ready for the next big thing In the wake of last week’s announcement of the general availability of Oracle ...

Oracle

How to Install Oracle 12c RAC: A Step-by-Step Guide

Announcement Okay, back to school folks, back to school :). As with any new product, our long learning journey starts ...

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Opening the Door Without the Keys

Performance Settings of Concurrent Managers

Oracle Database Load Testing Tools – Overview

ODA Re-imaging Could Take Anywhere Between 20 and 120 Minutes

Proactive FRA Monitoring Using OEM Metrics

The Internal Workflow of an E-Business Suite Concurrent Manager Process

Troubleshooting Transactional Replication Latency Using Agent Statistics

Oracle Database 12c: Network Recovery in RMAN

Do You Know If Your Database Is Slow?

How to Update JDK on Oracle Enterprise Linux from Version 1.6 to 1.7

Extending OEM 12c with Oracle Application Management Pack

Creating a Physical Standby with RMAN Active Duplicate in 11.2.0.3

Database 12c: What's New with Data Pump? Lots.

Exadata Join Offloading in Action

Duplication: divide et impera

How to Fix a Target with a Pending Status in OEM 12cR2

Hard Drive: Inner or Outer?

Configuring OID 11.1.1.6 Connector in OIM 11.1.2

Be Warned: cmclean.sql Is Dangerous!

Duplicate Database from Active Database — Just Works!

Managing Oracle on Windows: Where’s my Oratab?

Data Guard Cascaded Standby Support in DB12c

Database Validation in Data Guard 12c

How to Collect Cluster Information Using TSQL

Connection Resets When Importing from Oracle with Sqoop

SQL for Pattern Matching in Oracle 12c

Are You Paying Too Much for Database Support?

How to Tune Using v$mystat

Getting ready to install EBS 12.2 Vision: Quickstart notes

How to Install Oracle 12c RAC: A Step-by-Step Guide

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