Solution : https://service.sap.com/sap/support/notes/124606 (SAP Service marketplace login required)
Key words : 
/general/r3server/patches/rel31i/<platform>/<os>/orathe precise procedure, brconnectbr programs generate numerous zombie processes  17   1999-06-10 156603 brbackupincorrect database file, buffer overflow  21  2000-02-01   198236  brbackupdespite warnings brbackup exits, patch  date        note    program-----  ----------  -------  -------------------------------------------  1   1998-10-13 121200 brrestorebrrestore fails, redo logs  11  1999-02-26 140904 brbackuplong initialization times, message br334w  18  1999-07-02 160645 brconnectno tablespace, additional key words brarchive, exit code 0  22  2000-04-12   214305  brarchivebrarchive terminates, redo logs fails, scratch  20  1999-10-01   176167  brbackupbrbackup fails
Related Notes : 
       
| 214305 | BRARCHIVE ends. with warng despite of error messages | 
| 198236 | |
| 176167 | BRBACKUP fails with error message BR283E | 
| 163383 | Tapes are initialized with the name SCRATCH | 
| 160645 | No tablespace in backup mode for util_file_online | 
| 156603 | Incorrect database file name in message BR334W | 
| 153618 | |
| 152850 | BRBACKUP brconn_stop-x: errno:13 Permission denied | 
| 152794 | ORA-00001 in BRARCHIVE at position BraDblWrite-5 | 
| 143288 | SAPDBA: Super collective note | 
| 140904 | |
| 140902 | BRARCHIVE with BACKINT does not save all redo logs | 
| 135966 | BRBACKUP/BRARCHIVE termination with "-k only" | 
| 135960 | BRBACKUP/BRRESTORE hangs during parallel backup | 
| 128923 | Core dump in BR programs if option incorrect | 
| 126769 | Corrections in SAPDBA and in BR programs | 
| 124389 | New option -V in BR programs for patch information | 
| 124349 | Restoration of a backup in other time zone | 
| 122797 | BRBACKUP/BRARCHIVE support for Oracle 7.3.4 | 
| 122202 | WaitForMultipleObjects() call fails on NT | 
| 121200 | BRRESTORE fails when calling up the dd command | 
| 19466 | Downloading SAP kernel patches | 
| 12741 | Current versions of BR*Tools and SAPDBA |