SQL> Select
  2  aa.compression,
  3  aa.partition_name
  4  From dba_tab_partitions aa
  5  Where aa.table_name = 'TB_HXL_LIST';

COMPRESS PARTITION_NAME
-------- ------------------------------
DISABLED P_L1
DISABLED P_L2
DISABLED P_L3
DISABLED P_L4

SQL> Alter Table tb_hxl_list compress;

Table altered.

SQL> Alter Table TB_HXL_LIST
  2  Move Partition P_L1 compress;

Table altered.

SQL> Select
  2  aa.compression,
  3  aa.partition_name
  4  From dba_tab_partitions aa
  5  Where aa.table_name = 'TB_HXL_LIST';

COMPRESS PARTITION_NAME
-------- ------------------------------
ENABLED  P_L1
ENABLED  P_L2
ENABLED  P_L3
ENABLED  P_L4

SQL> Declare
  2    Rid Rowid;
  3    n   Number;
  4  Begin
  5    Select Max(Rowid) Into Rid From Tb_Hxl_List Partition(p_L3);
  6    n := Dbms_Compression.Get_Compression_Type(User, 'TB_HXL_LIST', Rid);
  7    Dbms_Output.Put_Line(n);
  8  End;
  9  /
2  -- COMP_FOR_OLTP p_L3 have been compressed

PL/SQL procedure successfully completed.

SQL> Declare
  2    Rid Rowid;
  3    n   Number;
  4  Begin
  5    Select Max(Rowid) Into Rid From Tb_Hxl_List Partition(p_L4);
  6    n := Dbms_Compression.Get_Compression_Type(User, 'TB_HXL_LIST', Rid);
  7    Dbms_Output.Put_Line(n);
  8  End;
  9  /
1 -- COMP_NOCOMPRESS P_L4 have not been compressed

PL/SQL procedure successfully completed.