Log Buffer #402, A Carnival of the Vanities for DBAs

This Log Buffer edition hits the ball out of park by smashing yet another record of surfacing with a unique collection of blog posts from various database technologies. Enjoy!!!

Oracle:

EM12c and the Optimizer Statistics Console.
SUCCESS and FAILURE Columns in DBA_STMT_AUDIT_OPTS.
OBIEE and ODI on Hadoop : Next-Generation Initiatives To Improve Hive Performance.
Oracle 12.1.0.2 Bundle Patching.
Performance Issues with the Sequence NEXTVAL Call.

SQL Server:

GUIDs GUIDs everywhere, but how is my data unique?
Questions About T-SQL Transaction Isolation Levels You Were Too Shy to Ask.
Introduction to Advanced Transact SQL Stairway and Using the CROSS JOIN Operator.
Introduction to Azure SQL Database Scalability.
What To Do When the Import and Export Wizard Fails.

MySQL:

Orchestrator 1.2.9 GA released.
Making HAProxy 1.5 replication lag aware in MySQL.
Monitor MySQL Performance Interactively With VividCortex.
InnoDB’s multi-versioning handling can be Achilles’ heel.
Memory summary tables in Performance Schema in MySQL 5.7.

Also published here.