From the right-click menu, select Create Logical Dimension, then select either

9-12 Metadata Repository Builders Guide for Oracle Business Intelligence Enterprise Edition – If a dimension with joins and levels has already been created, Create Dimension does not appear on the right-click menu. – If the table is not yet joined to any other table, the option is not available because it is considered a fact table. ■ In a snowflake schema, if you use a table with only one source and create the dimension automatically, the child tables are automatically incorporated into a hierarchy. The child tables form intermediate levels between the Grand Total level and detail level. If more then one child table exists for a dimension table, the hierarchy is a split hierarchy. To create a dimension automatically: 1. In the Administration Tool, open a repository. 2. In the Business Model and Mapping layer, right-click a logical dimension table that is not associated with any dimension .

3. From the right-click menu, select Create Logical Dimension, then select either

Dimension with Level-Based Hierarchy or Dimension with Parent-Child Hierarchy . The new dimension is displayed in the Business Model and Mapping layer. Populating Logical Level Counts Automatically Estimate Levels enables administrators to automatically populate level counts for one or more dimension hierarchies. Level counts are utilized by the query engine to determine the most optimal query plan and optimizes overall system performance. The repository must be opened in online mode and the business model must be available for queries. Then, in the Business Model and Mapping layer, you can select any of the following logical layer elements, and then execute the Estimate Levels command: ■ Business model. Must be available for queries. If you select this object, the Administration Tool attempts to check out all objects in the business model. ■ Dimension. You should run a consistency check on dimensions to ensure that the dimension is logically sound. ■ A combination of business models and dimensions. You can select multiple dimensions and multiple business models individually. When run, the Estimate Levels command also launches a consistency check on the level counts as described in the following list: ■ Checks that a level key is valid. Columns in levels have referential integrity. ■ Checks the parent-child relationship. If the parent level count is greater that the child level count, an error is returned. ■ Generates a run report that lists all the counts that were estimated and any errors or consistency warnings. ■ The queries and errors are logged to nqquery.log on the Oracle BI Server. Set the log level at 4 or higher to write this information to the log file. For more information about logging, see Diagnosing and Resolving Issues in Oracle Business Intelligence in Oracle Fusion Middleware System Administrators Guide for Oracle Business Intelligence Enterprise Edition. To populate logical level counts automatically: Working with Logical Dimensions 9-13 1. In the Administration Tool, open a repository in online mode. 2. Right-click one or more business models and dimension objects, and select Estimate Levels .

3. In the Check Out Objects dialog, click Yes to check out the objects that appear in