Blog | Pythian (36)

Oracle

Pro-active AWR Data Mining to find change in SQL Execution Plan

Problem Statement Many times we have been called for the poor performance of a database and it has been narrowed down ...

Oracle

What's new with apps password change in R12.2 E-Business Suite ?

Introduction Apps password change routine in Release 12.2 E-Business Suite changed a little bit. We have now extra ...

Oracle

The power of the Oracle Database Proxy authenticated connections

We recently received this inquiry from a client: "C an an Oracle database account support two passwords at once so we ...

Oracle

Should AUD$ Table Exist on System Tablespace During DB Upgrade?

I see this following message on all My Oracle Support notes, which talks about database Oracle manual upgrade steps.

Oracle

Using the ILOM for troubleshooting on ODA

I worked on root cause analysis for a strange node reboot on client's Oracle Database Appliance yesterday.

Oracle

What does "backup restore throttle speed" wait mean?

After migrating a 10g database to 11g, I asked the Application team to start their tests in order to validate that ...

Oracle

Room for Improvement - Using DBMS_REDEFINITION with Spatial Data

Resizing a Column in a Table With a Spatial Column Recently a client asked for help with using DBMS_REDEFINITION to ...

Oracle

Oracle Database: script to purge aud$ table using dbms_audit_mgmt package

With an increase in requirements on database security, database auditing is part of most production databases nowadays. ...

Microsoft SQL Server

Availability Group - Delay with Listener Connectivity After Failover

The beauty of working for multiple clients from different industries is that you get exposed to a myriad of environment ...

Oracle

Differences between R12.1 and R12.2 Integration with OAM

With the revamp of technology stack in R12.2 of Oracle E-Business Suite (EBS) , the way we integrate Oracle Access ...

Oracle

Alter session kill on steroids

Efficiently Handling Persistent "Killed" Sessions in Oracle Perhaps you have encountered something like this: A session ...

Oracle

Building a MariaDB Galera Cluster with Docker

There’s been a lot of talk about Docker for running processes in isolated userspace (or the cloud for that matter) ...

Oracle

Changing Failgroup of ASM Disks in Exadata

Problem Statement There was a discrepancy in the failgroups of couple of ASM disks in Exadata. In Exadata, the cell ...

Oracle

Oracle Passwords: How to Use Punctuation Symbols

Introduction You can’t make a password strong enough. But at least you can try. Having at least one upper case ...

Oracle

Fixing Windows RAC listener to listen on IP address of Hostname

Background Recently, there was an issue after a node was added to an existing Windows RAC cluster. After everything was ...

Microsoft SQL Server

SQL Server and OS Error 1117, Error 9001, Error 823

Introduction Along with other administrators, life of us, the DBAs are no different but full of adventure. At times, we ...

Google Workspace

Small files on MapR-FS

One of the well-known best practices for HDFS is to store data in few large files, rather than a large number of small ...

How SQL Server browser service Works

Some of you may wonder the role SQL browser service plays in the SQL Server instance. In this blog post, I’ll provide ...

Microsoft SQL Server

SQL Server replication quick tips

There is a time in every SQL Server DBA career where a mail came in with a “replication is not working, please check” ...

Cloud

Virtual CPUs with Amazon Web Services

Some months ago, Amazon Web Services changed the way they measure CPU capacity on their EC2 compute platform. In ...

Microsoft SQL Server

SQL server error: 18056, Severity: 20, State: 29

Introduction Howdy everyone, One of the most frequent error messages I come across when dealing with SQL Server, ...

Infra Ops

Debugging high CPU usage using Perf Tool and Vmcore Analysis

There are several tools and technologies available to debug deeper into high CPU utilization in a system; perf, sysrq, ...

Oracle

How To correlate Oracle Database transaction with GoldenGate

So there I was troubleshooting GoldenGate issue and was puzzled as to why GoldenGate transactions were not seen from ...

Oracle

12c: How to Restore/Recover a Small Table in a Large Database

Introduction As a DBA, you will receive requests from developers or users, indicating that they deleted some data in a ...

MySQL

Benchmark: TokuDB vs. MariaDB / MySQL InnoDB compression

Introduction As the amount of data companies are interested in collecting grows, life becomes all the more difficult ...

Microsoft SQL Server

List of SQL Server Databases in an Availability Group

Handling Maintenance Failures in SQL Server Availability Groups After migrating some databases to SQL Server 2012 and ...

Oracle

Exploring options of using RMAN configure to simplify backup

I am a simple person who likes simple things, especially RMAN backup implementation. I have yet to understand why many ...

Infra Ops

A (BIG) Trick Listing Windows updates using PowerShell

If you (like me) are using Microsoft.Update.Session for listing the installed windows updates, you might be surprised ...

Oracle

An introduction to extended data types in Oracle 12c

Introduction One of the lesser known new features that comes as a boon to many developers and DBAs is the provision of ...

Microsoft SQL Server

Data profile: better knowing your data

Problem Statement Have you ever needed to start a new data analysis project or create a report for the business users ...

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Pro-active AWR Data Mining to find change in SQL Execution Plan

What's new with apps password change in R12.2 E-Business Suite ?

The power of the Oracle Database Proxy authenticated connections

Should AUD$ Table Exist on System Tablespace During DB Upgrade?

Using the ILOM for troubleshooting on ODA

What does "backup restore throttle speed" wait mean?

Room for Improvement - Using DBMS_REDEFINITION with Spatial Data

Oracle Database: script to purge aud$ table using dbms_audit_mgmt package

Availability Group - Delay with Listener Connectivity After Failover

Differences between R12.1 and R12.2 Integration with OAM

Alter session kill on steroids

Building a MariaDB Galera Cluster with Docker

Changing Failgroup of ASM Disks in Exadata

Oracle Passwords: How to Use Punctuation Symbols

Fixing Windows RAC listener to listen on IP address of Hostname

SQL Server and OS Error 1117, Error 9001, Error 823

Small files on MapR-FS

How SQL Server browser service Works

SQL Server replication quick tips

Virtual CPUs with Amazon Web Services

SQL server error: 18056, Severity: 20, State: 29

Debugging high CPU usage using Perf Tool and Vmcore Analysis

How To correlate Oracle Database transaction with GoldenGate

12c: How to Restore/Recover a Small Table in a Large Database

Benchmark: TokuDB vs. MariaDB / MySQL InnoDB compression

List of SQL Server Databases in an Availability Group

Exploring options of using RMAN configure to simplify backup

A (BIG) Trick Listing Windows updates using PowerShell

An introduction to extended data types in Oracle 12c

Data profile: better knowing your data

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