Split-mirror backup: Attempt to mount unknown instance

Question

Hi experts,
I am backing up the Oracle database of an SAP system online via the split-mirror approach with a BRBACKUP -t online_split command. After having copied all datafiles, BRBACKUP terminates with the following error message (excerpt):
BR0330I Starting and mounting database instance X86/SPLIT ...
BR0278E Command output of '/oracle/X86/102_64/bin/sqlplus':
SQL*Plus: Release 10.2.0.1.0 - Production on Fri Aug 1 00:28:15 2008
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
SQL> ERROR:
ORA-12545: Connect failed because target host or object does not exist
SQL>
SQL> ORA-12545: Connect failed because target host or object does not exist
SQL>
BR0280I BRBACKUP time stamp: 2008-08-01 00.28.15
BR0279E Return code from '/oracle/X86/102_64/bin/sqlplus': 0
BR0302E SQLPLUS call for database instance X86/SPLIT failed
BR0332E Start and mount of database instance X86/SPLIT failed
At this point,
- all data files have been copied successfully;
- the control files have been copied;
- a copy of the backup summary .fnd file has been written to the sapbackup directory of both database host and backup host;
- I verified that the tablespaces had been put into backup mode before the split command was executed.
I wonder why BRBACKUP is trying to mount an instance "X86/SPLIT" that is not defined in tnsnames.ora?
What is the function of this step, and how can I suppress it as this flags the entry of the backup run in DB12 as failed?
OS version: Solaris 10 x64 (database and backup host)
Database: Oracle 10.2.0.2.0
SAP Kernel: 700
BRTOOLS Version: 7.00 (34)
Best regards,
Rainer

Answer 1

Michael,
the command
more /oracle/X86/.dbenv.sh | grep X86/SPLIT
did not return any matching line. I tried with .dbenv.sh, .dbenv.csh, .dbenv_<db_hostname>.sh, .dbenv_<db_hostname>.csh.
A sample is the following:
# @(#) $Id: //bc/700-1_REL/src/ins/SAPINST/impl/tpls/ora/ind/DBENV.CSH#7 $
# Oracle RDBMS Environment
setenv THREAD NOPS
if ( $THREAD == NOPS ) then
    set    DBSID = X86
else
    if ( $THREAD != "001" ) then
       set DBSID = X86_${THREAD}
    else
       set DBSID = X86
    endif
endif
setenv dbms_type       ORA
setenv dbs_ora_tnsname $DBSID
setenv dbs_ora_schema  SAPSR3
setenv ORACLE_SID      $DBSID
setenv DB_SID          X86
setenv ORACLE_BASE     /oracle
# check for running user and set for orasid ORA_NLS10
set USER = `id | awk -F\( '{print $2}' | awk -F\) '{print $1}'`
set TRUL = 'tr "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz"'
set ORASID = "ora`echo $DB_SID | $TRUL`"
if ( $USER != $ORASID ) then
  setenv TNS_ADMIN       /usr/sap/X86/SYS/profile/oracle
  set ADD=/oracle/client/10x_64/instantclient
  set _t=/oracle/X86/102_64/bin/sqlplus
  set _f=/sapmnt/X86/profile/DEFAULT.PFL
  set SAPDBHOST=""
  if ( -r "$_f" ) then
    set SAPDBHOST=`awk -F= '/^[      ]*SAPDBHOST[      ]*=/ {print $2; exit}' $_f | awk '{print $1}'`
  endif
  if ( -r "$_t" || `uname -n` == "$SAPDBHOST"  ) then
    setenv ORACLE_HOME /oracle/X86/102_64
  endif
else
  setenv ORACLE_HOME     /oracle/X86/102_64
  set ADD=/oracle/X86/102_64/lib
endif
setenv NLS_LANG        AMERICAN_AMERICA.UTF8
setenv SAPDATA_HOME    /oracle/X86
setenv DIR_LIBRARY     /usr/sap/X86/SYS/exe/run
if ( $?ORACLE_HOME ) then
  foreach d ( $ORACLE_HOME/bin )
    set i=0
    foreach p ( $path )
        if ( "$p" == "$d" ) then
            set i=1
            break
        endif
    end
    if ( $i == 0 ) then
        set path = ( $d $path )
    endif
  end
endif
switch (`uname`)
    case AIX*:
        if ( ! $?LIBPATH ) then
            setenv LIBPATH /usr/lib:/lib:${ADD}:/usr/sap/X86/SYS/exe/run
        else
            foreach d ( /usr/sap/X86/SYS/exe/run ${ADD} )
                set i=0
                foreach p ( `echo $LIBPATH | sed 's/:/ /g'` )
                    if ( "$p" == "$d" ) then
                        set i=1
                        break
                    endif
                end
                if ( $i == 0 ) then
                    setenv LIBPATH ${LIBPATH}:$d
                endif
            end
        endif
        breaksw
    case HP*:
        if ( ! $?SHLIB_PATH ) then
            setenv SHLIB_PATH ${ADD}:/usr/sap/X86/SYS/exe/run
        else
            foreach d ( /usr/sap/X86/SYS/exe/run ${ADD} )
                set i=0
                foreach p ( `echo $SHLIB_PATH | sed 's/:/ /g'` )
                    if ( "$p" == "$d" ) then
                        set i=1
                        break
                    endif
                end
                if ( $i == 0 ) then
                    setenv SHLIB_PATH ${SHLIB_PATH}:$d
                endif
            end
        endif
        breaksw
    case SIN*:
    case Reliant*:
    case Linux*:
        if ( ! $?LD_LIBRARY_PATH ) then
            setenv LD_LIBRARY_PATH ${ADD}:/usr/sap/X86/SYS/exe/run
        else
            foreach d ( /usr/sap/X86/SYS/exe/run ${ADD} )
                set i=0
                foreach p ( `echo $LD_LIBRARY_PATH | sed 's/:/ /g'` )
                    if ( "$p" == "$d" ) then
                        set i=1
                        break
                    endif
                end
                if ( $i == 0 ) then
                    setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:$d
                endif
            end
        endif
        breaksw
    case OSF*:
        if ( ! $?LD_LIBRARY_PATH ) then
            setenv LD_LIBRARY_PATH ${ADD}:/usr/sap/X86/SYS/exe/run
        else
            foreach d ( /usr/sap/X86/SYS/exe/run  ${ADD} )
                set i=0
                foreach p ( `echo $LD_LIBRARY_PATH | sed 's/:/ /g'` )
                    if ( "$p" == "$d" ) then
                        set i=1
                        break
                    endif
                end
                if ( $i == 0 ) then
                    setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:$d
                endif
            end
        endif
        breaksw
    default:
        if ( ! $?LD_LIBRARY_PATH ) then
            setenv LD_LIBRARY_PATH ${ADD}:/usr/sap/X86/SYS/exe/run
        else
            foreach d ( /usr/sap/X86/SYS/exe/run ${ADD} )
                set i=0
                foreach p ( `echo $LD_LIBRARY_PATH | sed 's/:/ /g'` )
                    if ( "$p" == "$d" ) then
                        set i=1
                        break
                    endif
                end
                if ( $i == 0 ) then
                    setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:$d
                endif
            end
        endif
        breaksw
endsw
# define some nice aliases
alias cdora 'cd /usr/sap/$SAPSYSTEMNAME/SYS/profile/oracle'
# end Oracle RDBMS Environment
Thank you for your time,
Rainer