A journaled file can not be renamed using standard operating system command (mv if you are playing in a UNIX-like environment) because journal must be updated with the new name. Utility program jf_rename has been designed to help you when a journaled file rename must be performed:
tiian@linux:~/tutorial> jf_rename -j jf_tut_foo-journal -n jf_tut_foo-data2 \
> jf_tut_foo-data1
tiian@linux:~/tutorial> jf_report -j jf_tut_foo-journal
<?xml version="1.0" encoding="UTF-8"?>
<journal>
<header magic_number='0x41524153' version='1' file_id_mask='0x38'
file_id_mask_shift='3' size_mask='0xffffffc0' size_mask_shift='6'
file_size='4194304' file_num='3' rotation_threshold='0.800'
ctrl_recs='36' journal_recs='32980' />
<journaled_file_table max_files='8' number_of_files='2'
file_table='0x804b170'>
<file id='0' name='jf_tut_foo-journal' last_pos='32984' last_size='0'
status='0' last_uc_pos='0' last_uc_size='32984' stream='0x804b008' />
<file id='1' name='jf_tut_foo-data2' last_pos='0' last_size='791'
status='0' last_uc_pos='0' last_uc_size='0' stream='(nil)' />
</journaled_file_table>
<records>
<rollback jrn_rec_off='32980' file_id='0'/>
</records>
</journal>