SQL Performance (MOSC)

MOSC Banner

Performance issue with CBO

edited Jun 19, 2015 10:14AM in SQL Performance (MOSC) 15 commentsAnswered

Hello,

My system runs Oracle Database v. 11.1.0.7

We have an application which is deployed on several Oracle instances on the same server.

The SGA of instances is configured following the number of customers using the application. Others parameters are almost the same across instances.

We have performance problem with a query on one table on one instance:

TABLE1 (42 columns, ~3'785'000 rows)

Column TABLE1.calendar_day is DATE format. This column is indexed.

The instance has parameter memory_target = 4G.

The number of customers on the instance is directly linked with the number of rows in TABLE1. More customers = a bigger table.

Howdy, Stranger!

Log In

To view full details, sign in to My Oracle Support Community.

Register

Don't have a My Oracle Support Community account? Click here to get started.

Category Leaderboard

Top contributors this month

Instructions for posting

×

1. Select a discussion category from the picklist.


2. Enter a title that clearly identifies the subject of your question.


3. In the body, insert detailed information, including Oracle product and version.


Please abide by the Oracle Community guidelines and refrain from posting any customer or personally identifiable information (PI/CI).


Cloud / Fusion customers - Our Cloud community has moved! Please go to Cloud Customer Connect .


New to My Oracle Support Community? Visit our Welcome Center

MOSC Help Center