Oracle SQL Profile Internals

| May 27, 2013

Black Box

Database Partitioning A Source Table With Golden Gate Replication In Place

| May 5, 2013

GoldenGateAt a client site there was a requirement for performance of a SIEBEL database to partition an existing source table that happened to be also replicated with golden gate. The requirement was only to partition the source table and NOT the replicated target table.  During this process an issue (more...)

Applying a Hint to SQL Code that cannot change

| Mar 14, 2013

PerformanceLast night during investigation of a performance issue for a client it was found that due to significant growth in the database a select query was suddenly taking hours to run instead of minutes. Obvious things like statistics and the database were checked and it was clear to see the SQL code needed a review. However this code is from a vendor and cannot be changed so the client was interested in anything that could be done to assist them in the short term. This blog update covers the analysis and final answer which was to introduce the parallel hint (more...)

Applying a Hint to SQL Code that cannot change

| Mar 14, 2013

PerformanceLast night during investigation of a performance issue for a client it was found that due to significant growth in the database a select query was suddenly taking hours to run instead of minutes. Obvious things like statistics and the database were checked and it was clear to see the SQL code needed a review. However this code is from a vendor and cannot be changed so the client was interested in anything that could be done to assist them in the short term. This blog update covers the analysis and (more...)