Oracle Database Discussions

I am working on oracle 11.1.0.7 database on solaris.

We had issues loading data into compressed tables, so we are trying to uncompress the tables and their partitions.
When I tried uncompressing a hash partitioned table, I am getting this error

SQL> alter table sample move partition SYS_1 nocompress;
alter table sample move partition SYS_1 nocompress
*
ERROR at line 1:
ORA-14260: incorrect physical attribute specified for this partition

I am able to move the table, it is just the nocompress option which doesn;t work.

SQL> alter table sample move partition SYS_1;

Table altered.

Can't we uncompress a hash partitioned table which is compressed?