Questions and answers

Can a view be partitioned Oracle?

Can a view be partitioned Oracle?

In late Oracle7 releases the concept of partitioned views was introduced. A partitioned view consists of several tables, identical except for name, joined through a view. A partition view is a view that for performance reasons brings together several tables to behave as one.

Can we create a index view on partitioned view?

Indexed views can be created on a partitioned table, and can themselves be partitioned. All indexes on a view are dropped when the view is dropped.

How do you check if a table is partitioned or not?

(Not tested) If you right click on the table name in SSMS–> then generate script–> create table. In the script, if the table is partitioned, then there must be a ON clause with partition function used. Please mark posts as answer or helpful when they are. You can get the information from the SYS tables.

What are the different types of views?

There are three types of pictorial views:

  • perspective.
  • isometric.
  • oblique.

What is hash partition in Oracle?

Hash partitioning maps data to partitions based on a hashing algorithm that Oracle applies to the partitioning key that you identify. The hashing algorithm evenly distributes rows among partitions, giving partitions approximately the same size.

Do views update automatically?

Yes, they are updated, every time you use them. I think Microsoft sums up what a View is quite clearly: A view can be thought of as either a virtual table or a stored query. Views are not automatically cached.

Which statement is true about partitioned view?

Partitioned views allow the data in a large table to be split into smaller member tables. The data is partitioned between the member tables based on ranges of data values in one of the columns.

How can I tell if Oracle partition is enabled?

Start the Oracle installer and check if “Oracle Partitioning” is installed. If it is, you can just start using it. If not, you will get error ORA-00439: feature not enabled: Partitioning. If you get this error, upgrade to Enterprise Edition and/or install the partitioning option.

What does all _ tab _ subpartitions mean in Oracle?

ALL_TAB_SUBPARTITIONS describes, for each table subpartition accessible to the current user, the subpartition name, name of the table and partition to which it belongs, and its storage attributes.

How to view partitioned table in Oracle Database?

You can display information about partitioned tables and indexes with Oracle Database views. Table 4-4 lists the views that contain information specific to partitioned tables and indexes: Table 4-4 Views With Information Specific to Partitioned Tables and Indexes DBA view displays partitioning information for all partitioned tables in the database.

How are subpartition templates used in a table?

You can create subpartitions in a composite partitioned table using a subpartition template. A subpartition template simplifies the specification of subpartitions by not requiring that a subpartition descriptor be specified for every partition in the table.

Which is DBA view displays the partitioning information?

DBA view displays partitioning information for all partitioned tables in the database. ALL view displays partitioning information for all partitioned tables accessible to the user.