|  |     Actually I get this error reported in the group logfile
    
    jrn, message operation error status -255
    
    I included below the end of the  trace file, various errors are
    reported there, what is the meaning of this errors ?
    
    
    IPI  10668:IPI-QE DEQ failed, -18 (FFFFFFEE)
    IPI  10668:IPI-***********************************
    IPI  10668:IPI-IPI_ipcdeq entered
    IPI  10668:IPI-SPIread_q failed, -256 (FFFFFF00)
    IPI  10668:IPI-IPI_ipcdeq failed, -39 (FFFFFFD9)
    IPI  10668:IPI-IPI_dispose_of_message with status, -38 (FFFFFFDA)
    IPI  10668:IPI-IPI_reset_send_stats
    IPI  10668:IPI-IPIget_attributes
    IPI  10668:IPI-IPIdelete_entity
    IPI  10668:IPI-IPIdelete_context_entity
    IPI  10668:IPI-IPIdelete_entity
    IPI  10668:IPI-IPIdelete_context_entity
    IPI  10668:IPI-IPIdelete_entity
    IPI  10668:IPI-IPIdelete_context_entity
    IPI  10668:IPI-IPIdelete_entity
    IPI  10668:IPI-IPIdelete_context_entity
    IPI  10668:IPI-IPI_disconnect_q
    IPI  10668:IPI-IPI_disconnect_dmq_qe
    IPI  10668:IPI-IPI_ipcdeq entered
    IPI  10668:IPI-SPIread_q failed, -256 (FFFFFF00)
    IPI  10668:IPI-IPI_ipcdeq failed, -39 (FFFFFFD9)
    IPI  12258:IPI-Notify Action    , 0 (00000000)
    IPI  12258:IPI-Status           , 0 (00000000)
    IPI  12258:IPI-Undel Status     , 3 (00000003)
    IPI  12258:IPI-User Msg ident   , -131137507 (F82F001D)
    IPI  12258:IPI-User Hdr len     , 0 (00000000)
    IPI  12258:IPI-User Msg len     , 456 (000001C8)
    IPI  12258:IPI-Data Format      , 1 (00000001)
    IPI  12258:IPI-Visit Count      , 16 (00000010)
    IPI  12258:IPI-Rosn Time        , 0 (00000000)
    IPI  12258:IPI-Rosn Seq         , 0 (00000000)
    IPI  12258:IPI-Lra lsl          , 0 (00000000)
    IPI  12258:IPI-Lra msl          , 0 (00000000)
    IPI  12258:IPI-Expire secs      , 0 (00000000)
    IPI  12258:IPI-Expire nsecs     , 0 (00000000)
    IPI  12258:IPI-***********************************
    IPI  12258:IPI-IPI_ipcdeq entered
    IPI  12258:IPI-QE Enqueue Status : , 0 (00000000)
    IPI  12258:IPI-IPI_dispose_of_message with status, 0 (00000000)
    IPI  12258:IPI-IPIdelete_entity
    IPI  12258:IPI-IPIdelete_context_entity
    IPI  12258:IPI-IPIdelete_entity
    IPI  12258:IPI-IPIdelete_context_entity
    IPI  12258:IPI-IPIcreate_entity
    IPI  12258:IPI-IPI_create_m
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIdequeue_message
    IPI  12258:IPI-IPI_deq_dmq_qe
    IPI  12258:IPI-IPI_ipcdeq entered
    IPI  12258:IPI-QE DEQ failed, -16 (FFFFFFF0)
    IPI  12258:IPI-IPIdelete_entity
    IPI  12258:IPI-IPIdelete_context_entity
    IPI  12258:IPI-IPIcreate_entity
    IPI  12258:IPI-IPI_create_m
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIdequeue_message
    IPI  12258:IPI-IPI_deq_dmq_qe
    IPI  12258:IPI-IPI_ipcdeq entered
    IPI  12258:IPI-QE DEQ failed, -16 (FFFFFFF0)
    IPI  12258:IPI-IPIdelete_entity
    IPI  12258:IPI-IPIdelete_context_entity
    IPI  12258:IPI-IPIcreate_entity
    IPI  12258:IPI-IPI_create_m
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIdequeue_message
    IPI  12258:IPI-IPI_deq_dmq_qe
    IPI  12258:IPI-IPI_ipcdeq entered
    IPI  12258:IPI-QE DEQ failed, -16 (FFFFFFF0)
    IPI  12258:IPI-IPIdelete_entity
    IPI  12258:IPI-IPIdelete_context_entity
    IPI  12258:IPI-IPIcreate_entity
    IPI  12258:IPI-IPI_create_m
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIdequeue_message
    IPI  12258:IPI-IPI_deq_dmq_qe
    IPI  12258:IPI-IPI_ipcdeq entered
    IPI  12258:IPI-QE DEQ failed, -16 (FFFFFFF0)
    IPI  12258:IPI-IPIdelete_entity
    IPI  12258:IPI-IPIdelete_context_entity
    IPI  12258:IPI-IPIcreate_entity
    IPI  12258:IPI-IPI_create_m
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIset_attributes
    IPI  12258:IPI-IPIdequeue_message
    IPI  12258:IPI-IPI_deq_dmq_qe
    IPI  12258:IPI-IPI_ipcdeq entered
    IPI  12258:IPI-******* Dequeue IPI Message *******
    IPI  12258:IPI-Msg Type         , 19 (00000013)
    IPI  12258:IPI-Ipi Hdr Version  , 65538 (00010002)
    IPI  12258:IPI-Ipi Hdr Length   , 128 (00000080)
    IPI  12258:IPI-Msg Seq Low      , 1049578 (001003EA)
    IPI  12258:IPI-Msg Seq High     , 532 (00000214)
    IPI  12258:IPI-Timestamp secs   , 859371669 (3338F895)
    IPI  12258:IPI-Timestamp nsecs  , 252784000 (0F112D80)
    IPI  12258:IPI-Msg Priority     , 0 (00000000)
    IPI  12258:IPI-Msg Source       , 16.201 (001000C9)
    IPI  12258:IPI-Msg Dest         , 16.100 (00100064)
    IPI  12258:IPI-Msg Orig Source  , 16.201 (001000C9)
    IPI  12258:IPI-Msg Orig Dest    , 16.100 (00100064)
    IPI  12258:IPI-Msg Routethrough , 0 (00000000)
    IPI  12258:IPI-Msg Notif Target , 0.32 (00000020)
    IPI  12258:IPI-Msg Alt Target   , 0.0 (00000000)
    IPI  12258:IPI-Msg Jrn Target   , 0.0 (00000000)
    IPI  12258:IPI-Deliv Action     , 32 (00000020)
    IPI  12258:IPI-Undeliv Action   , 513 (00000201)
    IPI  12258:IPI-Notify Action    , 0 (00000000)
    IPI  12258:IPI-Status           , 0 (00000000)
    IPI  12258:IPI-Undel Status     , 3 (00000003)
    IPI  12258:IPI-User Msg ident   , -137756643 (F7CA001D)
    IPI  12258:IPI-User Hdr len     , 0 (00000000)
    IPI  12258:IPI-User Msg len     , 0 (00000000)
    IPI  12258:IPI-Data Format      , 1 (00000001)
    IPI  12258:IPI-Visit Count      , 16 (00000010)
    IPI  12258:IPI-Rosn Time        , 859371669 (3338F895)
    IPI  12258:IPI-Rosn Seq         , 0 (00000000)
    IPI  12258:IPI-Lra lsl          , 0 (00000000)
    IPI  12258:IPI-Lra msl          , 0 (00000000)
    IPI  12258:IPI-Expire secs      , 0 (00000000)
    IPI  12258:IPI-Expire nsecs     , 0 (00000000)
    IPI  12258:IPI-***********************************
    IPI  12258:IPI-IPI_update_receive_stats
    IPI  12258:IPI-IPIget_attributes
    IPI  12258:IPI-IPIget_attributes
    IPI  12258:IPI-IPIget_attributes
    IPI  12258:IPI-IPIdelete_entity
    IPI  12258:IPI-IPIdelete_context_entity
    12460:IPI-User Hdr len     , 0 (00000000)
    IPI  12460:IPI-User Msg len     , 249 (000000F9)
    IPI  12460:IPI-Data Format      , 1 (00000001)
    IPI  12460:IPI-Visit Count      , 16 (00000010)
    IPI  12460:IPI-Rosn Time        , 859374906 (3339053A)
    IPI  12460:IPI-Rosn Seq         , 8 (00000008)
    IPI  12460:IPI-Lra lsl          , 1048577 (00100001)
    IPI  12460:IPI-Lra msl          , 13500416 (00CE0000)
    IPI  12460:IPI-Expire secs      , 0 (00000000)
    IPI  12460:IPI-Expire nsecs     , 0 (00000000)
    IPI  12460:IPI-***********************************
    IPI  12460:IPI-IPIenqueue_message
    IPI  12460:IPI-IPI_update_send_stats
    IPI  12460:IPI-IPIget_attributes
    IPI  12460:IPI-IPI_enq_dmq_qe
    IPI  12460:IPI-message size : , 465 (000001D1)
    IPI  12460:IPI-IPI_build_header
    IPI  12460:IPI-enqueue request for queue, 1001 (000003E9)
    IPI  12460:IPI-******* Enqueue IPI Message *******
    IPI  12460:IPI-Msg Type         , 19 (00000013)
    IPI  12460:IPI-Ipi Hdr Version  , 65538 (00010002)
    IPI  12460:IPI-Ipi Hdr Length   , 128 (00000080)
    IPI  12460:IPI-Msg Seq Low      , 18874377 (01200009)
    IPI  12460:IPI-Msg Seq High     , 4090648 (003E6B18)
    IPI  12460:IPI-Timestamp secs   , 0 (00000000)
    IPI  12460:IPI-Timestamp nsecs  , 0 (00000000)
    IPI  12460:IPI-Msg Priority     , 0 (00000000)
    IPI  12460:IPI-Msg Source       , 9.289 (00090121)
    IPI  12460:IPI-Msg Dest         , 16.1 (00100001)
    IPI  12460:IPI-Msg Orig Source  , 9.289 (00090121)
    IPI  12460:IPI-Msg Orig Dest    , 16.1 (00100001)
    IPI  12460:IPI-Msg Routethrough , 0 (00000000)
    IPI  12460:IPI-Msg Notif Target , 9.98 (00090062)
    IPI  12460:IPI-Msg Alt Target   , 9.98 (00090062)
    IPI  12460:IPI-Msg Jrn Target   , 0.0 (00000000)
    IPI  12460:IPI-Deliv Action     , 302 (0000012E)
    IPI  12460:IPI-Undeliv Action   , 4 (00000004)
    IPI  12460:IPI-Notify Action    , 64 (00000040)
    IPI  12460:IPI-Status           , 0 (00000000)
    IPI  12460:IPI-Undel Status     , 3 (00000003)
    IPI  12460:IPI-User Msg ident   , 1966082 (001E0002)
    IPI  12460:IPI-User Hdr len     , 0 (00000000)
    IPI  12460:IPI-User Msg len     , 249 (000000F9)
    IPI  12460:IPI-Data Format      , 1 (00000001)
    IPI  12460:IPI-Visit Count      , 16 (00000010)
    IPI  12460:IPI-Rosn Time        , 859374906 (3339053A)
    IPI  12460:IPI-Rosn Seq         , 8 (00000008)
    IPI  12460:IPI-Lra lsl          , 1048577 (00100001)
    IPI  12460:IPI-Lra msl          , 13500416 (00CE0000)
    IPI  12460:IPI-Expire secs      , 0 (00000000)
    IPI  12460:IPI-Expire nsecs     , 0 (00000000)
    IPI  12460:IPI-***********************************
    IPI  12460:IPI-Expire secs      , 0 (00000000)
    IPI  12460:IPI-Expire nsecs     , 0 (00000000)
    IPI  12460:IPI-***********************************
    IPI  12460:IPI-IPI_ipcdeq entered
    IPI  12460:IPI-QE Enqueue Status : , -4 (FFFFFFFC)
    IPI  12460:IPI-IPI_reset_send_stats
    IPI  12460:IPI-IPIget_attributes
    IPI  12460:IPI-xgroup_enqueue status , 0 (00000000)
    IPI  12460:IPI-IPIdelete_entity
    IPI  12460:IPI-IPIdelete_context_entity
    IPI  12460:IPI-IPIdelete_entity
    IPI  12460:IPI-IPIdelete_context_entity
    IPI  12460:IPI-IPIdelete_entity
    IPI  12460:IPI-IPIdelete_context_entity
    IPI  12460:IPI-IPI_disconnect_q
    IPI  12460:IPI-IPI_disconnect_dmq_qe
    IPI  12460:IPI-IPI_ipcdeq entered
    IPI  12460:IPI-SPIread_q failed, -256 (FFFFFF00)
    IPI  12460:IPI-IPI_ipcdeq failed, -39 (FFFFFFD9)
    IPI  12460:IPI-detaching shared resources
    IPI  12460:IPI-deleting ipi context
    IPI  12460:IPI-deleting security cache
    
    Jean-Paul.
 | 
|  |     Here is another trace file which exhibits error -255
    JRN-08430, entering JRN_stream_read, stream 16.2
    SM -08430, entering SMstream_read, stream 16.2
    SM -08430, entering SM_stream_read_apc, stream 16.2
    SM -08430, entering SM_area_open, area 16.2:0
    SM -08430, exiting SM_area_open, SM_ALREADY
    SM -08430, entering SM_page_touch, page 16.2:0.1
    SM -08430, exiting SM_page_touch, SM_SUCCESS
    SM -08430, fragment sequence mismatch, apc 0.1.0
    SM -08430, exiting SM_stream_read_apc, SM_CORRUPT
    SM -08430, exiting SMstream_read, SM_CORRUPT
    JRN-08430, exiting JRN_stream_read, -255
    JRN-08430, exiting JRN_message_read, -255
    JRN-08430, entering JRN_shutdown
    JRN-08430, entering JRN_context_destroy
    JRN-08430, entering JRN_stream_destroy, stream 16.1
    JRN-08430, destroying pending io trees
    SM -08430, entering SMstream_destroy, stream 16.1
    SM -08430, entering SM_area_open, area 16.1:0
                                              
    It looks like we are getting a corruption in the journal file ?
    
    Jean-Paul.
 |