Updating partition key column would cause a partition change

[email protected] select table_name,partition_name,num_rows from user_tab_partitions where table_name='LINE_ITEMS'; TABLE_NAME PARTITION_ NUM_ROWS --------------- ---------- ---------- LINE_ITEMS P2014_01 10 LINE_ITEMS SYS_P4270 10 LINE_ITEMS SYS_P4271 10 LINE_ITEMS SYS_P4278 19 [email protected] update orders set order_date=to_date('27-FEB-2014','DD-MON-YYYY') where order_id=1; update orders set order_date=to_date('27-FEB-2014','DD-MON-YYYY') where order_id=1 * ERROR at line 1: ORA-14402: updating partition key column would cause a partition change select table_name,partition_name,num_rows from user_tab_partitions where table_name='ORDERS'; TABLE_NAME PARTITION_ NUM_ROWS --------------- ---------- ---------- ORDERS P2014_01 9 ORDERS SYS_P4270 10 ORDERS SYS_P4271 11 ORDERS SYS_P4272 10 ORDERS SYS_P4273 10 ORDERS SYS_P4274 10 ORDERS SYS_P4275 10 ORDERS SYS_P4276 9 ORDERS SYS_P4277 20 9 rows selected.

Summary: partition merge is possible with interval reference partitionierung and affects both master and child table. Let’s continue with question #2: what happens if we update a row in the master table so that it has to be moved into another partition (ROW MOVEMENT) Initial situation: select table_name,partition_name,num_rows from user_tab_partitions where table_name='ORDERS'; TABLE_NAME PARTITION_ NUM_ROWS --------------- ---------- ---------- ORDERS P2014_01 10 ORDERS SYS_P4270 10 ORDERS SYS_P4271 11 ORDERS SYS_P4272 10 ORDERS SYS_P4273 10 ORDERS SYS_P4274 10 ORDERS SYS_P4275 10 ORDERS SYS_P4276 9 ORDERS SYS_P4277 19 9 rows selected.

The following blog post details how Fact Partitioning can be implemented. An ODI procedure is provided in BI Apps repository that generates a template .In the rare case where your design has a flaw that rows have to move between Partitions, you need to ENABLE ROW MOVEMENT.In the example below, a row has to move from the 'SG' Partition to the 'IN' Partition.After that, everything is automatically taken care of.Partitions can be introduced at any time - prior to an initial load or after several subsequent incremental loads.

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