Hotsos Symposium Speaker – Riyaj Shamsudeen

Riyaj Shamsudeen is a returning Hotsos Symposium presenter.


Riyaj ShamsudeenRiyaj Shamsudeen has 20+ years of experience in Oracle and 19+ years as an Oracle DBA/Oracle Applications DBA. He is the principal DBA for OraInternals, a consulting company resolving many advanced performance, recovery, RAC, and EBS11i issues. Riyaj specializes in RAC and performance issues and has authored many articles, mostly about performance, database internals, optimizer internals, etc.

Mr. Shamsudeen is a frequent presenter in major conferences such as Hotsos Symposia, UKOUG, RMOUG etc. He is also a proud member of OakTable network, and he blogs regularly at

Riyaj is an Oracle Ace Director, and he has co-authored four books with esteemed colleagues.

Presentation Titles

RAC 12c Optimization


Understanding the various layers of the RAC stack is very important to optimize an application in a RAC database. Riyaj will discuss the RAC cache fusion and various layers of RAC stack including various RAC wait events, placeholder wait events, etc. He will also cover the methods to identify the objects and SQL statements that are causing performance issues. Changes in Dynamic resource mastering feature in 12c will be discussed further. He will also review MTU, interaction between LMS and LGWR, AWR reports, etc. Further discussion will lead to a brief primer on object level tuning specific to RAC.

Presentation Materials

Presentation materials are available online to attendees only.


Riyaj ShamsudeenThe speaker schedule is as follows: