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Prerequisites

The table must be in your own schema, or you must have ALTER object privilege on the table, or you must have ALTERANYTABLE system privilege.

Use the ALTER TABLE statement to alter the definition of a nonpartitioned table, a partitioned table, a table partition, or a table subpartition. For object tables or relational tables with object columns, use ALTER TABLE to convert the table to the latest definition of its referenced type after the type has been altered.

Additional Prerequisites for Partitioning Operations If you are not the owner of the table, then you need the DROPANYTABLE privilege in order to use the drop_table_partition or truncate_table_partition clause.

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You must also have space quota in the tablespace in which space is to be acquired in order to use the add_table_partition, modify_table_partition, move_table_partition, and split_table_partition clauses.

Additional Prerequisites for Constraints and Triggers To enable a unique or primary key constraint, you must have the privileges necessary to create an index on the table. You need these privileges because Oracle Database creates an index on the columns of the unique or primary key in the schema containing the table.

To enable or disable triggers, the triggers must be in your schema or you must have the ALTERANYTRIGGER system privilege.

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Additional Prerequisites When Using Object Types To use an object type in a column definition when modifying a table, either that object must belong to the same schema as the table being altered, or you must have either the EXECUTEANYTYPE system privilege or the EXECUTE schema object privilege for the object type. Dj tools vol. 6 fracus 12.

Additional Prerequisites for Flashback Data Archive Operations

To use the flashback_archive_clause to enable historical tracking for the table, you must have the FLASHBACKARCHIVE object privilege on the flashback data archive that will contain the historical data. To use the flashback_archive_clause to disable historical tracking for the table, you must have the FLASHBACKARCHIVEADMINSTER system privilege or you must be logged in as SYSDBA.

See Also:

CREATE INDEX for information on the privileges needed to create indexes