Database DataWarehousing (MOSC)

MOSC Banner

Hash Partitioning

edited Aug 9, 2010 2:53AM in Database DataWarehousing (MOSC) 3 commentsAnswered ✓
 I find a lack of documentation on hash partitioning that can answer my questions.

What fields are best suited for hash parititioning?

I have a table that has 2 highly selectable fields.  The table will be partitioned by range on a date field in yearly increments and sub-partitioned by hash on one of the two following fields.

Hash field candidate1 has low cardinality but the data is skewed.

Hash field candidate 2 has high cardinality but the data is not skewed.

Both fields are part of the table's primary key.

Also, once I know the best hash partitioning candidate, how do I choose the optimal number of hash parititions?

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