ARCHECKER onbar backup proplem.

Hi,all I use "onbar -b -L 0" had 0-level backup, and use "archecker -bvs" for verify archive,there some warning/error in /tmp/ac_msg.log. BAR use ISM, use document for store. ========================= ISM_DATA_POOL ISMDiskData ISM_LOG_POOL ISMDiskLogs What's the wrong with config? ========================== ac_msg.log ================ 2009-09-25 14:27:55 ----------------------------------------- STATUS: IBM Informix Dynamic Server Version 11.50.UC5 Program Name: archecker Version: 8.0 Released: 2009-07-14 19:19:21 CSDK: IBM Informix CSDK Version 3.50 ESQL: IBM Informix-ESQL Version 3.50.UC4 Compiled: 07/14/09 19:19 on Linux 2.6.9-34.ELsmp #1 SMP Fri Feb 24 16:54:53 EST 2006 STATUS: Arguments [-bvs] STATUS: AC_STORAGE /tmp STATUS: AC_MSGPATH /tmp/ac_msg.log STATUS: AC_VERBOSE on STATUS: AC_TAPEBLOCK 62 KB STATUS: AC_IXBAR /opt/informix/etc/ixbar.0 STATUS: AC_TIMEOUT 300 STATUS: AC_SESSION WARNING: Total pages processed 0 WARNING: Scan FAILED STATUS: Control page checks PASSED STATUS: Starting checks of dbspace rootdbs. STATUS: Validating reserve pages. STATUS: Reserve page validation PASSED STATUS: Checking rootdbs:TBLSpace STATUS: Checking sysmaster:sysdatabases STATUS: Checking system:syslicenseinfo STATUS: Checking sysmaster:systables STATUS: Checking sysmaster:syscolumns STATUS: Checking sysmaster:sysindices STATUS: Checking sysmaster:systabauth ......here are checking tables....... STATUS: Checking sysutils:acu_sblob_request STATUS: Checking sysutils:arc_sbname_index STATUS: Checking sysutils:arc_sbname_index2 STATUS: Checking sysutils:acu_sblob_extent STATUS: Checking sysutils:arc_sb_ext_id STATUS: Finished checking dbspace rootdbs (status = Pass). STATUS: Table checks PASSED TIME: [2009-09-25 14:27:58] Checking Completed STATUS: Tables/Fragments validated: 402 ERROR: Archive Physical Validation Failed. STATUS: archecker completed Validation pid = 11377 exit code: 3