Modify rman_parms with SAP-Backup

Hi All

I'm using the SAP-Agent in RMAN mode to backup our SAP-Landscape.

Problem is that only the SAP-Part receives and respects the OB2BARHOSTNAME used for the Session.

The RMAN-Streams us the local (Node-)Hostname which leads to two Host-Objects being logged in IDB, one of which isn't even in the cell_info.

Example:

Object Name                         Object Type     Object Status     CopyID
===============================================================================
ntrla117.tri002.tss.loc:DAC_bepeenjf.8670_1 SAP             Completed       185622 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8671_1 SAP             Completed       153534 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8672_1 SAP             Completed       43030 (O)
ntrla117.tri002.tss.loc:DAC_bepeenjf.8673_1 SAP             Completed       168458 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8674_1 SAP             Completed       66702 (O)
ntrla117.tri002.tss.loc:DAC_bepeenjf.8675_1 SAP             Completed       140078 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8677_1 SAP             Completed       59138 (O)
ntrla117.tri002.tss.loc:DAC_bepeenjf.8676_1 SAP             Completed       151797 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8678_1 SAP             Completed       71030 (O)
ntrla117.tri002.tss.loc:DAC_bepeenjf.8679_1 SAP             Completed       49577 (O)
ntrla117.tri002.tss.loc:DAC_bepeenjf.8680_1 SAP             Completed       66129 (O)
ntrla117.tri002.tss.loc:DAC_bepeenjf.8681_1 SAP             Completed       90674 (O)
ntrla117.tri002.tss.loc:DAC_bepeenjf.8682_1 SAP             Completed       126189 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8683_1 SAP             Completed       171659 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8684_1 SAP             Completed       63380 (O)
ntrla117.tri002.tss.loc:DAC_bepeenjf.8685_1 SAP             Completed       124519 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8686_1 SAP             Completed       101410 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8687_1 SAP             Completed       200670 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8688_1 SAP             Completed       138615 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8692_1 SAP             Completed       151763 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8689_1 SAP             Completed       84965 (O)
ntrla117.tri002.tss.loc:DAC_bepeenjf.8690_1 SAP             Completed       156747 (O
ntrla117.tri002.tss.loc:DAC_bepeenjf.8691_1 SAP             Completed       129259 (O
ntrla117et50.tri002.tss.loc:DAC.0     SAP             Completed       195566 (O
ntrla117et50.tri002.tss.loc:DAC.1     SAP             Completed       8180 (O)
ntrla117et50.tri002.tss.loc:DAC.2     SAP             Completed       184335 (O
ntrla117et50.tri002.tss.loc:DAC.3     SAP             Completed       132336 (O
ntrla117et50.tri002.tss.loc:DAC.4     SAP             Completed       22400 (O)
ntrla117et50.tri002.tss.loc:DAC.5     SAP             Completed       129739 (O
ntrla117et50.tri002.tss.loc:DAC.6     SAP             Completed       131562 (O
ntrla117et50.tri002.tss.loc:DAC.7     SAP             Completed       47679 (O)

I tried to manually update the rman_parms Parameter in SAP-Init File but it is overwritten by each Backup-attempt.

Does anybody know of a way to add additional Parameters to the automatically generated params-String?

Fixed Setting OB2BARHOSTNAME in the local omnirc-Files would work for Backup, but prevents any Restore from another Server or Instance. No Option for or SAP-Engineers.

Thanks for your Suggestions

Stefan