Activation error "cnc_supplemental_log() Error connecting to Oracle" and "Error: 12032 - OCIServe (4330596)

The following errors occur during activation when running the RAC database in restricted mode:

sp_ctrl (sun329-vip:2200)>  activate config copuDemo2

   cnc_supplemental_log() Error connecting to Oracle

sp_ctrl (sun329-vip:2200)> show log reverse

06/12/08 20:15 Notice: Parameter SP_ORD_LOGIN_O.COPU1 not found [sp_cnc(pdb)/22530]
06/12/08 20:15 Notice: logon() error() [sp_cnc/22530]
06/12/08 20:15 Error: 12032 - OCIServerAttach failed with ORA-12545. [sp_cnc(osp)/22530]
06/12/08 20:11 Notice: logon() error() [sp_cnc/22530]

Explicitly granting DBA role to Shareplex user did not help though the user would have this role by virtue of running the ora_setup earlier. The database was running in supplemental logging mode. The activation worked when the database was running in a normal (non-restricted) mode.