Tag Archives: oracle

Paper “RDBMS Forensics – Troubleshooting Using ASH”

Arthur C. Clarke wrote that any sufficiently advanced technology is indistinguishable from magic, and it sometimes makes troubleshooting seem like magic, or perhaps art. But it is neither magic nor art; it is process and this presentation uses a case study, such as resolving the ORA-03136 “connection lost” error, to demonstrate that process and to show how components such as ASH, typically thought of as performance tuning tools for DBAs, are also useful diagnostic tools for everyone, particularly developers.  Readers will learn a forensic, empirical approach to troubleshooting and see a demonstration of a complex troubleshooting task resulting in a non-intuitive but empirically sound resolution.  This presentation should make you think of Active Session History as something like queryable trace information captured and stored within the database.

This is the white paper to accompany the presentation slidedeck of the same title.

Paper “Scaling To Infinity: Partitioning Data Warehouses On Oracle Database”

Star schemas (a.k.a. dimensional data models) are demanded by BI analysts in data marts and data warehouses.  Star transformations are the optimal join method to access star schemas in Oracle.  Bitmap indexes are required by the star transformation process, but bitmap indexes quickly become literally infeasible without partitioning.  Why isn’t this documented?  How do all these crucial pieces fit together?  Find out what major features of Oracle Database are enabled by partitioning, as well as how and why.  This presentation is the result of long practical experience in logical and physical database design for data warehouses, driven by the combination of business requirements and systems requirements and painfully gained understanding of data warehousing realities.  It provides straight answers to help you utilize Oracle Database features to ensure data warehousing success.

The original presentation in the “Scaling To Infinity” series which describes how table partitioning is the key to scaling an Oracle database to support a data warehouse to the limits of the underlying hardware.

This is the white paper to accompany the presentation slidedeck of the same title.

Presentation “Scaling To Infinity: Partitioning Data Warehouses On Oracle Database”

Star schemas (a.k.a. dimensional data models) are demanded by BI analysts in data marts and data warehouses.  Star transformations are the optimal join method to access star schemas in Oracle.  Bitmap indexes are required by the star transformation process, but bitmap indexes quickly become literally infeasible without partitioning.  Why isn’t this documented?  How do all these crucial pieces fit together?  Find out what major features of Oracle Database are enabled by partitioning, as well as how and why.  This presentation is the result of long practical experience in logical and physical database design for data warehouses, driven by the combination of business requirements and systems requirements and painfully gained understanding of data warehousing realities.  It provides straight answers to help you utilize Oracle Database features to ensure data warehousing success.

The original presentation in the “Scaling To Infinity” series which describes how table partitioning is the key to scaling an Oracle database to support a data warehouse to the limits of the underlying hardware.

This is the presentation slidedeck to accompany the white paper of the same title.

Presentation “Avoiding The Pitfalls Of An Oracle E-Business Suites Upgrade”

Oracle E-Business Suites upgrade projects are complex and lengthy.  There are dozens or hundreds of steps, so checkpointing your work and taking backups is key to avoiding the disaster of a mishap or misstep.  Data virtualization for E-Business Suites is a better solution than backups, and this presentation and webinar describes how.

Presented as an online webinar with Mike Swing and Kyle Hailey on Thu 07-April 2016.  Webinar recording available online here.