Blog | Pythian | Database (14)

MySQL

Monitoring your 5.7 InnoDB cluster status

Recently, we worked with a customer seeking assistance in monitoring their MySQL 5.7 InnoDB cluster. Following a ...

Oracle

Recovering from quarterly PSU patching disaster

Applying Patching Applying GRID INFRASTRUCTURE PATCH SET UPDATE 11.2.0.4.181016(Patch 28429134) for AIX (64-Bit) was a ...

Oracle

Reviewing the operation modes of Oracle GoldenGate BigQuery Handler

GoldenGate for Big Data 12.3.2.1.1 introduces a new target — Google BigQuery. The BigQuery handler can work in two ...

Oracle

Solving an uncommon Oracle error code - ORA-01041

So, here is the thing. We have a customer running a 11.2 Single Instance Oracle database on Windows. I know the version ...

Oracle

Oracle Enterprise Manager Cloud Control 13c release 3 (13.3.0.0) database template

Intro I am currently working on a project to install Oracle Enterprise Manager Cloud Control Release 13.3 and was ...

Cassandra

Step-by-bstep monitoring Cassandra with with Prometheus and Grafana

In this blog, I’m going to give a detailed guide on how to monitor a Cassandra cluster with Prometheus and Grafana. For ...

MySQL

Rotating your ProxySQL log files

Recently I received several questions about rotating log files for ProxySQL, so I decided to draft it up as a blog ...

Oracle

Using RDA to check Oracle Database preinstallation

Remote Diagnostic Agent (RDA) is often under-utilized. It has some very nice features such as database preinstallation ...

Oracle

Troubleshooting a datapatch error in Oracle

Troubleshooting datapatch failure As part of patching preparation, the following command was executed and failed: ...

Oracle

How do you test your Oracle database backup?

From my experience, the one area where a DBA cannot afford to make errors is in database backup. When was the last time ...

Oracle

Troubleshooting a GoldenGate error code

Introduction After applying Oracle GoldenGate V12.2.0.1.170919 for Oracle Database 12c OPTIMIZER Patch for Bug# ...

Oracle

Oracle parallel query hints reference - part 7: PQ_DISTRIBUTE and partitioned tables

In Part 1 of the series, we covered in detail how the PQ_DISTRIBUTE can change the data distribution method across ...

Oracle

Upgrading grid infrastructure from 12.1 to 12.2 in Exadata

1 Pre-requisites / preparation 12.2 Grid Infrastructure and Database Upgrade steps for Exadata Database Machine running ...

Oracle

Creating a custom Oracle EBS preinstall RPM for RHEL7

Oracle, by default, ships preinstall RPMs only for Oracle Linux. Preinstall RPMs make the life of a DBA very easy by ...

Oracle

How to retrieve growth history for oracle tablespaces

A customer recently asked us to identify tablespaces that most contributed to sudden space consumption on ASM. It's ...

Oracle

GoldenGate: relative or absolute path for trail files?

When implementing GoldeGate solutions, something as simple as path to trail files can create havoc. What is the correct ...

Oracle

How to create an Oracle 18c client image in Docker

In a previous blog How to use Oracle instant client docker images, I described how to obtain and customize an Oracle ...

Oracle

EM 12c, EM 13c: delete agent and targets using emcli

Situation It's feasible to delete agents and targets using GUI but can take a lot of work depending on configuration ...

MySQL

Log buffer #561: A carnival of the vanities for DBAs

This Log Buffer Edition covers Cloud, Oracle, and MySQL.

Cassandra

How to build your very own Cassandra 4.0 release

Over the last few months, I have been seeing references to Cassandra 4.0 and some of its new features. When that ...

MySQL

Gathering GoldenGate deployment status

The objective of this post is to demonstrate how to gather existing GoldenGate deployment status. The rationale is to ...

Oracle

How to use Oracle Instant Client Docker images

There are two available, both Version 12.2. One is found on Docker Hub and the other on the Oracle Container Registry. ...

Oracle

The best times to apply Oracle quarterly patches

When is the best time to apply an Oracle quarterly patch? I suppose the answer is, "It depends." As it turns out, we ...

MySQL

Log buffer #556: a carnival of the vanities for DBAs

This log buffer edition covers Cloud, Oracle and MySQL.

Oracle

How to determine RMAN backup size

Importance A time long ago, I wrote a SQL query to determine RMAN backup size. Here is another validation for the SQL ...

Oracle

How to creates Kubernetes jobs with Python

In this blog post I will do a quick guide, with some code examples, on how to deploy a Kubernetes Job programmatically, ...

Cassandra

Listener over Infiniband on Exadata (part 1)

Oracle

Cloning a PDB with encrypted data in united mode - avoid ORA-00283

The purpose of this blog post is to give you some guidelines on how to avoid " ORA-00283: recovery session canceled due ...

Oracle

Enable X11 forwarding after Sudo SSH session for AWS EC2 Linux instance

Challenges Working with a secure environment presents some challenges and this post will demonstrate how to overcome ...

MySQL

Log buffer #559: a carnival of the vanities for DBAs

This Log Buffer Edition covers Cloud, Oracle and MySQL.

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Monitoring your 5.7 InnoDB cluster status

Recovering from quarterly PSU patching disaster

Reviewing the operation modes of Oracle GoldenGate BigQuery Handler

Solving an uncommon Oracle error code - ORA-01041

Oracle Enterprise Manager Cloud Control 13c release 3 (13.3.0.0) database template

Step-by-bstep monitoring Cassandra with with Prometheus and Grafana

Rotating your ProxySQL log files

Using RDA to check Oracle Database preinstallation

Troubleshooting a datapatch error in Oracle

How do you test your Oracle database backup?

Troubleshooting a GoldenGate error code

Oracle parallel query hints reference - part 7: PQ_DISTRIBUTE and partitioned tables

Upgrading grid infrastructure from 12.1 to 12.2 in Exadata

Creating a custom Oracle EBS preinstall RPM for RHEL7

How to retrieve growth history for oracle tablespaces

GoldenGate: relative or absolute path for trail files?

How to create an Oracle 18c client image in Docker

EM 12c, EM 13c: delete agent and targets using emcli

Log buffer #561: A carnival of the vanities for DBAs

How to build your very own Cassandra 4.0 release

Gathering GoldenGate deployment status

How to use Oracle Instant Client Docker images

The best times to apply Oracle quarterly patches

Log buffer #556: a carnival of the vanities for DBAs

How to determine RMAN backup size

How to creates Kubernetes jobs with Python

Listener over Infiniband on Exadata (part 1)

Cloning a PDB with encrypted data in united mode - avoid ORA-00283

Enable X11 forwarding after Sudo SSH session for AWS EC2 Linux instance

Log buffer #559: a carnival of the vanities for DBAs

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