Solution : https://service.sap.com/sap/support/notes/811637 (SAP Service marketplace login required)
Key words :
undocumented br_sbq environment variable, internal database block consistency, terms br tools reason, remote tape devices, increases data integrity, gnu tape tools, secure copy command, split-mirror columns, tables/index structure, redo log files
Related Notes :
700733 | Support for the scp command in BR*Tools |
680046 | Corrections in BR*Tools Version 6.40 |
378818 | Dividing the split mirrors in BRBACKUP query runs |