table partition for sale tables XYZ, in SAP with oracle DB.

[dharmender]

Hi Guys,

I am looking table partition in oracle DB with SAP, I have followed the note 722188 but unable to proceed.

can I get some help toward syntax commands for table XYZ already exist inside the system.(Oracle +SAP)

[umasaral]

Hi 

Certainly! Partitioning an existing table in Oracle without disturbing the current operations and minimizing downtime can be achieved using the ALTER TABLE command to directly add partitions to an existing table. Here's an approach to accomplish this with minimal disruption:
Check Existing Table Structure:
DESCRIBE XYZ;

Add a Partition Column (if necessary)--If the existing table does not already have a column that will be used for partitioning, you might need to add it. Make sure this column aligns with your partitioning strategy.

ALTER TABLE XYZ ADD (partition_column DATE);

Convert Table to Partitioned Table--
ALTER TABLE XYZ
PARTITION BY RANGE (partition_column) (
PARTITION p1 VALUES LESS THAN (TO_DATE('2023-01-01', 'YYYY-MM-DD')),
PARTITION p2 VALUES LESS THAN (TO_DATE('2024-01-01', 'YYYY-MM-DD')),
PARTITION p3 VALUES LESS THAN (MAXVALUE)
);

For existing data, Oracle handles it according to the new partitioning rules. You don't need to manually move data. After partitioning, Oracle will automatically manage the data placement according to the partition definitions.

Ensure that the partitions have been created correctly and data is distributed as expected:
SELECT * FROM USER_TAB_PARTITIONS WHERE TABLE_NAME = 'XYZ';

Depending on your setup, you might need to rebuild indexes after partitioning:
ALTER INDEX index_name REBUILD;

Using the ALTER TABLE approach avoids the need to create a new table and move data manually, thereby minimizing downtime and disruptions.