I've already set the db_2k_cache_size is there a limitation for setting this up. what do i need to check . what am i doing wrong. couldnt find anything on metalink nor the docs. SQL> CREATE TABLESPACE D_PATLOB DATAFILE '/dev/rvd_bptrnext8' SIZE 20010M AUTOEXTEND OFF, '/dev/rvd_txnrsp3' SIZE 9000M AUTOEXTEND OFF LOGGING ONLINE PERMANENT EXTENT MANAGEMENT LOCAL UNIFORM SIZE 200M BLOCKSIZE 2K; 2 3 4 5 6 7 8 CREATE TABLESPACE D_PATLOB DATAFILE * ERROR at line 1: ORA-01144: File size (10245120 blocks) exceeds maximum of 4194303 blocks -- //www.freelists.org/webpage/oracle-l