Solution : https://service.sap.com/sap/support/notes/1464091 (SAP Service marketplace login required)
Key words : 
data1   1       9          7          2                0  checksum   file_head   2       9          9          1                0  fractured free_ext   3       9         10          2                0  checksum   free_ext   4       9         17          1                0  checksum   indpart     sapsr3    tpar2_1              p2   5       9         24          1                0  checksum   indpart     sapsr3    tpar2_1              p2, 6       9         41          4                0  checksum   free_ext   7       9         52          1                0  checksum   indpart     sapsr3    tpar3_1              p12, file_id   block_id  block_cnt        corr_scn   corr_type segm_type  owner      segm_name            part_nametablespace, possibly delete archive log filesfor post_arch_cmd, backint directorynull - backint call takes place, /oracle/sid/sapdata3/testi_1/testi, - deactivate monitoring index usagethe results, physical data file block details, <exit_code> - brbackup exit codebrarchive executes, <exit_code> - brarchive exit codefor pre_back_cmd
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