How communion between trigger and java program?

I want to achieve the effect:when data in database change ,the java program can know,but don't use refresh method?

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Jerry wang ([email protected]):
I want to achieve the effect:when data in database change ,the java program can know,but don't use refresh method?<HR></BLOCKQUOTE>
You can achieve that effect with oracle alert package.
Victor Batista
null

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    B Wed Aug 31 15:45:40 2011
    B  create_con (con_name=R/3)
    B  Loading DB library 'D:\usr\sap\CUS\DVEBMGS04\exe\dboraslib.dll' ...
    B  Library 'D:\usr\sap\CUS\DVEBMGS04\exe\dboraslib.dll' loaded
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    B  New connection 0 created
    M sysno      04
    M sid        CUS
    M systemid   560 (PC with Windows NT)
    M relno      7000
    M patchlevel 0
    M patchno    52
    M intno      20050900
    M make:      multithreaded, Unicode, optimized
    M pid        456
    M
    M  kernel runs with dp version 210000(ext=109000) (@(#) DPLIB-INT-VERSION-210000-UC)
    M  length of sys_adm_ext is 572 bytes
    M  ***LOG Q0Q=> tskh_init, WPStart (Workproc 0 456) [dpxxdisp.c   1293]
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    M  DpSysAdmExtCreate: ABAP is active
    M  DpSysAdmExtCreate: VMC (JAVA VM in WP) is not active
    M  DpShMCreate: sizeof(wp_adm)          18304     (1408)
    M  DpShMCreate: sizeof(tm_adm)          3954072     (19672)
    M  DpShMCreate: sizeof(wp_ca_adm)          24000     (80)
    M  DpShMCreate: sizeof(appc_ca_adm)     8000     (80)
    M  DpCommTableSize: max/headSize/ftSize/tableSize=500/8/528056/528064
    M  DpShMCreate: sizeof(comm_adm)          528064     (1048)
    M  DpFileTableSize: max/headSize/ftSize/tableSize=0/0/0/0
    M  DpShMCreate: sizeof(file_adm)          0     (72)
    M  DpShMCreate: sizeof(vmc_adm)          0     (1452)
    M  DpShMCreate: sizeof(wall_adm)          (38456/34360/64/184)
    M  DpShMCreate: sizeof(gw_adm)     48
    M  DpShMCreate: SHM_DP_ADM_KEY          (addr: 05C00040, size: 4613144)
    M  DpShMCreate: allocated sys_adm at 05C00040
    M  DpShMCreate: allocated wp_adm at 05C01E28
    M  DpShMCreate: allocated tm_adm_list at 05C065A8
    M  DpShMCreate: allocated tm_adm at 05C065D8
    M  DpShMCreate: allocated wp_ca_adm at 05FCBB70
    M  DpShMCreate: allocated appc_ca_adm at 05FD1930
    M  DpShMCreate: allocated comm_adm at 05FD3870
    M  DpShMCreate: system runs without file table
    M  DpShMCreate: allocated vmc_adm_list at 06054730
    M  DpShMCreate: allocated gw_adm at 06054770
    M  DpShMCreate: system runs without vmc_adm
    M  DpShMCreate: allocated ca_info at 060547A0
    M  DpShMCreate: allocated wall_adm at 060547A8
    X  EmInit: MmSetImplementation( 2 ).
    X  MM diagnostic options set: 0
    X  <ES> client 0 initializing ....
    X  Using implementation flat
    M  <EsNT> Memory Reset disabled as NT default
    X  ES initialized.

    M Wed Aug 31 15:45:41 2011
    M  ThInit: running on host crmsys

    M Wed Aug 31 15:45:42 2011
    M  calling db_connect ...
    C  Prepending D:\usr\sap\CUS\DVEBMGS04\exe to Path.

    C Wed Aug 31 15:45:47 2011
    C  Client NLS settings: AMERICAN_AMERICA.UTF8
    C  Logon as OPS$-user to get SAPSR3's password
    C  Connecting as /@CRM on connection 0 (nls_hdl 0) ... (dbsl 700 240106)
    C  Nls CharacterSet                 NationalCharSet              C      EnvHp      ErrHp ErrHpBatch
    C    0 UTF8                                                      1   0619F158   061A46F4   061A3F7C
    C  Attaching to DB Server CRM (con_hdl=0,svchp=061A3EC8,svrhp=061B5794)
    C  Starting user session (con_hdl=0,svchp=061A3EC8,srvhp=061B5794,usrhp=061CA558)

    C Wed Aug 31 15:45:48 2011
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    C  Got SAPSR3's password from OPS$-user
    C  Disconnecting from connection 0 ...
    C  Closing user session (con_hdl=0,svchp=061A3EC8,usrhp=061CA558)
    C  Now I'm disconnected from ORACLE
    C  Connecting as SAPSR3/<pwd>@CRM on connection 0 (nls_hdl 0) ... (dbsl 700 240106)
    C  Nls CharacterSet                 NationalCharSet              C      EnvHp      ErrHp ErrHpBatch
    C    0 UTF8                                                      1   0619F158   061A46F4   061A3F7C
    C  Starting user session (con_hdl=0,svchp=061A3EC8,srvhp=061B5794,usrhp=061CA558)
    C  Now 'SAPSR3/<pwd>@CRM' is connected (con_hdl 0, nls_hdl 0).
    C  Database NLS settings: AMERICAN_AMERICA.UTF8
    C  Database instance CRM is running on CRMSYS with ORACLE version 10.2.0.1.0 since 20110831

    B Wed Aug 31 15:45:49 2011
    B  Connection 0 opened (DBSL handle 0)
    B  Wp  Hdl ConName          ConId     ConState     TX  PRM RCT TIM MAX OPT Date     Time   DBHost         
    B  000 000 R/3              000000000 ACTIVE       NO  YES NO  000 255 255 20110831 154542 CRMSYS         
    M  db_connect o.k.
    M  ICT: exclude compression: .zip,.cs,.rar,.arj,.z,.gz,.tar,.lzh,.cab,.hqx,.ace,.jar,.ear,.war,.css,.pdf,.js,.gzip,.uue,.bz2,.iso,.sda,.sar,.gif

    I Wed Aug 31 15:46:12 2011
    I  MtxInit: 0 0 0
    M  SHM_PRES_BUF               (addr: 0A7C0040, size: 4400000)
    M  SHM_ROLL_AREA          (addr: 788A0040, size: 61440000)
    M  SHM_PAGING_AREA          (addr: 0AC00040, size: 32768000)
    M  SHM_ROLL_ADM               (addr: 0CB50040, size: 615040)
    M  SHM_PAGING_ADM          (addr: 0CBF0040, size: 525344)
    M  ThCreateNoBuffer          allocated 544152 bytes for 1000 entries at 0CC80040
    M  ThCreateNoBuffer          index size: 3000 elems
    M  ThCreateVBAdm          allocated 12160 bytes (50 server) at 0CD10040
    X  EmInit: MmSetImplementation( 2 ).
    X  MM diagnostic options set: 0
    X  <ES> client 0 initializing ....
    X  Using implementation flat
    X  ES initialized.
    B  db_con_shm_ini:  WP_ID = 0, WP_CNT = 13, CON_ID = -1
    B  dbtbxbuf: Buffer TABL  (addr: 10E700C8, size: 30000000, end: 12B0C448)
    B  dbtbxbuf: Buffer TABLP (addr: 12B100C8, size: 10240000, end: 134D40C8)
    B  dbexpbuf: Buffer EIBUF (addr: 0FBA00D0, size: 4194304, end: 0FFA00D0)
    B  dbexpbuf: Buffer ESM   (addr: 134E00D0, size: 4194304, end: 138E00D0)
    B  dbexpbuf: Buffer CUA   (addr: 138F00D0, size: 3072000, end: 13BDE0D0)
    B  dbexpbuf: Buffer OTR   (addr: 13BE00D0, size: 4194304, end: 13FE00D0)
    M  rdisp/reinitialize_code_page -> 0
    M  icm/accept_remote_trace_level -> 0
    M  rdisp/no_hooks_for_sqlbreak -> 0
    M  CCMS: AlInitGlobals : alert/use_sema_lock = TRUE.

    S Wed Aug 31 15:46:15 2011
    S  *** init spool environment
    S  initialize debug system
    T  Stack direction is downwards.
    T  debug control: prepare exclude for printer trace
    T  new memory block 1946AA80

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    S  using table TSP02FX for frontend printing
    S  1 spool work process(es) found
    S  frontend print via spool service enabled
    S  printer list size is 150
    S  printer type list size is 50
    S  queue size (profile)   = 300
    S  hostspool list size = 3000
    S  option list size is 30
    S      found processing queue enabled
    S  found spool memory service RSPO-RCLOCKS at 1D6D00A8
    S  doing lock recovery
    S  setting server cache root
    S  found spool memory service RSPO-SERVERCACHE at 1D6D0430
    S    using messages for server info
    S  size of spec char cache entry: 297028 bytes (timeout 100 sec)
    S  size of open spool request entry: 2132 bytes
    S  immediate print option for implicitely closed spool requests is disabled

    A Wed Aug 31 15:46:18 2011

    A  -PXA--
    A  PXA INITIALIZATION
    A  PXA: Fragment Size too small: 73 MB, reducing # of fragments
    A  System page size: 4kb, total admin_size: 5132kb, dir_size: 5076kb.
    A  Attached to PXA (address 688A0040, size 150000K)
    A  abap/pxa = shared protect gen_remote
    A  PXA INITIALIZATION FINISHED
    A  -PXA--


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    A  >> Shm MMDAT area (addr=57ED5000 leng=16150528 end=58E3C000)
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    A  RFC rfc/dump_client_info = 0
    A  RFC rfc/cp_convert/ignore_error = 1
    A  RFC rfc/cp_convert/conversion_char = 23
    A  RFC rfc/wan_compress/threshold = 251
    A  RFC rfc/recorder_pcs not set, use defaule value: 2
    A  RFC rfc/delta_trc_level not set, use default value: 0
    A  RFC rfc/no_uuid_check not set, use default value: 0
    A  RFC rfc/bc_ignore_thcmaccp_retcode not set, use default value: 0
    A  RFC Method> initialize RemObjDriver for ABAP Objects
    M  ThrCreateShObjects          allocated 13730 bytes at 0FFB0040

    N Wed Aug 31 15:46:22 2011
    N  SsfSapSecin: putenv(SECUDIR=D:\usr\sap\CUS\DVEBMGS04\sec): ok

    N  =================================================
    N  === SSF INITIALIZATION:
    N  ===...SSF Security Toolkit name SAPSECULIB .
    N  ===...SSF trace level is 0 .
    N  ===...SSF library is D:\usr\sap\CUS\DVEBMGS04\exe\sapsecu.dll .
    N  ===...SSF hash algorithm is SHA1 .
    N  ===...SSF symmetric encryption algorithm is DES-CBC .
    N  ===...sucessfully completed.
    N  =================================================

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    N  MskiInitLogonTicketCacheHandle: Logon Ticket cache pointer retrieved from shared memory.
    N  MskiInitLogonTicketCacheHandle: Workprocess runs with Logon Ticket cache.
    M  JrfcVmcRegisterNativesDriver o.k.
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    W  === ipl_Init() called
    B    dbtran INFO (init_connection '<DEFAULT>' [ORACLE:700.08]):
    B     max_blocking_factor =  15,  max_in_blocking_factor      =   5,
    B     min_blocking_factor =  10,  min_in_blocking_factor      =   5,
    B     prefer_union_all    =   0,  prefer_join                 =   0,
    B     prefer_fix_blocking =   0,  prefer_in_itab_opt          =   1,
    B     convert AVG         =   0,  alias table FUPD            =   0,
    B     escape_as_literal   =   1,  opt GE LE to BETWEEN        =   0,
    B     select *            =0x0f,  character encoding          = STD / <none>:-,
    B     use_hints           = abap->1, dbif->0x1, upto->2147483647, rule_in->0,
    B                           rule_fae->0, concat_fae->0, concat_fae_or->0

    W Wed Aug 31 15:46:24 2011
    W    ITS Plugin: Path dw_gui
    W    ITS Plugin: Description ITS Plugin - ITS rendering DLL
    W    ITS Plugin: sizeof(SAP_UC) 2
    W    ITS Plugin: Release: 700, [7000.0.52.20050900]
    W    ITS Plugin: Int.version, [32]
    W    ITS Plugin: Feature set: [10]
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    W  === ipl_Init() returns 0, ITSPE_OK: OK
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    E  EnqCcInitialize: local lock table initialization o.k.
    E  EnqId_SuppressIpc: local EnqId initialization o.k.
    E  EnqCcInitialize: local enqueue client init o.k.

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    B  table logging switched off for all clients

    M Wed Aug 31 15:47:55 2011
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    M  SecAudit(RsauShmInit): addr of SCSA........... = 05BD0040
    M  SecAudit(RsauShmInit): addr of RSAUSHM........ = 05BD07A8
    M  SecAudit(RsauShmInit): addr of RSAUSLOTINFO... = 05BD07E0
    M  SecAudit(RsauShmInit): addr of RSAUSLOTS...... = 05BD07EC

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