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What happens if you use a city as a partition key and an office in that city moves elsewhere?Or two offices in the same city (from different groups or business units within the same company) merge into one location?
SYNTAX: When you CREATE or ALTER a partitioned table, a row movement clause either ENABLE ROW MOVEMENT or DISABLE ROW MOVEMENT can be specified.
This clause either enables or disables the migration of a row to a new partition if it's key is updated. A partitioned table should prevent moving data from one partition to another unless you are correcting data.
If you have followed the examples, you should be able to select data from sales table. BEST PRACTICES: Row movements should be disabled on partitioned table as soon as you are done updating.
If the table needs frequent update on key column, it may cause poor performance to a query running against the table.
Can anybody please suggest any alternative to update the row.
One of the relatively newer features in Oracle concerns the moving of rows. An early use of row movement was highlighted in Oracle8i, and row movement then, as well as now, applied to moving rows in a partitioned table.00000 - "updating partition key column would cause a partition change" *Cause: An UPDATE statement attempted to change the value of a partition key column causing migration of the row to another partition *Action: Do not attempt to update a partition key column or make sure that the new partition key is within the range containing the old partition key.SOLUTION: If you have read the above explanation, you would know why you are seeing this error? When we issued the UPDATE on time_id column, the data from sales_m2_2016 partitions are going to move to partition sales_m1_2016 partition.Why would a row move and who or what controls that movement? With newer releases of the Oracle RDBMS, where else does row movement come into play, and are there any gotcha's with respect to row movement operations? Does a row move to another table, or is row movement constrained to the row's container (i.e., a table)?A list partition where the partition key is a specific value is a good example of this.Many partitioned table examples use regions, cities and states as list examples.If the partition key column needs frequent update, then you may re-think about another solid column from a table as a good candidate for partition key column.When row moments are disabled and someone is trying to update the partition key column, Oracle will throw ORA-14402 error.You could split the default partition and add the new location name.How would you move records from the old partitioned into the new one?