Log Buffer #448: a carnival of the vanities for DBAs

Posted in: Log Buffer, Technical Track

This Log Buffer is dedicated to the top quality news from the arena of Oracle, SQL Server and MySQL.


  • We had a question on AskTom the other day, asking us to explain what a “latch” was.
  • Jonathan Lewis thinks column groups can be amazingly useful in helping the optimizer to generate good execution plans because of the way they supply better details about cardinality.
  • Today it’s all about developing software that makes access to your product easier.
  • Steve Jobs sets a great perspective on the journey of simplicity. It starts from simple, goes through complexity and ends up in simplicity.
  • AWR period comparison is pretty easy if you have access to the two periods in the same AWR repository.

SQL Server:

  • Understanding Peer-to-Peer Transactional Replication, Part 2.
  • Knee-Jerk Wait Statistics : PAGELATCH.
  • Stairway to Columnstore Indexes Level 5: Adding New Data To Columnstore Indexes.
  • SQL Server Reporting Services General Best Practices.
  • Hello Azure: Azure IaaS – Getting Started.
  • A Skills Roadmap for DBAs in the Cloud Era.


  • MySQL Performance: 1M QPS on mixed OLTP_RO with MySQL 5.7 GA.
  • Deploying MongoDB, MySQL, PostgreSQL & MariaDB’s MaxScale in 40min.
  • ClusterControl Tips & Tricks: wtmp Log Rotation Settings for Sudo User.
  • Setting-up second mysql instance & replication on Linux in 10 steps.
  • s9s Tools and Resources: ‘Become a MySQL DBA’ series, ClusterControl 1.2.11 release, and more!


Learn more about Pythian’s expertise in Oracle SQL Server & MySQL.



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About the Author

I have been in love with Oracle blogging since 2007. This blogging, coupled with extensive participation in Oracle forums, plus Oracle related speaking engagements, various Oracle certifications, teaching, and working in the trenches with Oracle technologies has enabled me to receive the Oracle ACE award. I was the first ever Pakistani to get that award. From Oracle Open World SF to Foresight 20:20 Perth. I have been expressing my love for Exadata. For the last few years, I am loving the data at Pythian, and proudly writing their log buffer carnivals.

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