We created an interval partition table structure only, then try to import the data from exported dump file. It causes ORA-14300 error. The same error occures when insert records from another online backup table:
SQL> insert into tbl_test select * from tbl_test_old;
insert into tbl_test select * from tbl_test_old;
ERROR at line 1:
ORA-14300: partitioning key maps to a partition outside maximum permitted number of partitions
There are NULL values in partition key column.
Update NULL values of partition key column to right values, or remove those invalid records from source data.
Please note there are possible 1048575 partitions or subpartitions for the partition key:
$ oerr ora 14300
14300, 00000, “partitioning key maps to a partition outside maximum permitted number of partitions”
// *Cause: The row inserted had a partitioning key that maps to a partition number greater than 1048575
// *Action Ensure that the partitioning key falls within 1048575 partitions or subpartitions.