ogg参数之handlecollisions
本文主要探讨 handlecollisions 参数的作用。
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环境
ogg12c 版本。
源端目标端都在 a 列上有主键。
准备工作
停掉抽取进程和投递进程
源端插入几条数据
源端抽取进程跳过这些 insert ， alter extract EXT_MI01,begin now
启动抽取进程和投递进程
Delete 实验
目标端
SQL> select * from t3;
A EUTIME B ---------- --------------- ---------- 1 3 2 22-OCT-18 3 3 22-OCT-18 3
3 rows selected. |
源端：
SQL> select * from t3;
A EUTIME B ---------- --------------- ---------- 1 3 2 22-OCT-18 3 3 22-OCT-18 3 4 23-OCT-18 3 5 23-OCT-18 3
5 rows selected.
|
源端 delete ，并提交
SQL> delete from t3 where a=4; |
复制进程 abend ：
2018-10-23 14:39:05 WARNING
OGG-01004 Aborted grouped transaction on 'MING.T3', Database error 1403 (OCI Error ORA-01403: no data found,
SQL ND "EUTIME" = :b1 AND "B" = :b2 AND ROWNUM = 1>). 2018-10-23 14:39:05 WARNING OGG-01003 Repositioning to rba 2135 in seqno 7. 2018-10-23 14:39:05
WARNING OGG-01154 SQL error 1403 mapping MING.T3 to MING.T3 OCI Error ORA-01403: no data found,
SQL "B" = :b2 AND ROWNUM = 1>. Source Context : SourceModule : [er.errors] SourceID : [/scratch/aime/adestore/views/aime_adc4150330/oggcore/OpenSys/src/app/er/errors.cpp] SourceFunction : [take_rep_err_action] SourceLine : [941] ThreadBacktrace : [15] elements : [/u01/app/oracle/products/ogg/libgglog.so(CMessageContext::AddThreadContext()+0x1b) [0x7f9d6f0554eb]] : [/u01/app/oracle/products/ogg/libgglog.so(CMessageFactory::CreateMessage(CSourceContext*, unsigned int, ...)+0x135) [0x7f9d6f04f5c5]] : [/u01/app/oracle/products/ogg/libgglog.so(_MSG_ERR_MAP_TO_TANDEM_FAILED(CSourceContext*, ggs::gglib::ggapp::CQualDBObjName<(DBObjType)1> const&, ggs::gglib::g gapp::CQualDBObjName<(DBObjType)1> const&, CMessageFactory::MessageDisposition)+0x50) [0x7f9d6f048c7c]] : [/u01/app/oracle/products/ogg/replicat(take_rep_err_action(short, int, char const*, extr_ptr_def*, std_rec_hdr_def*, char*, file_def*, bool)+0x17aa) [0x5b63ef ]] : [/u01/app/oracle/products/ogg/replicat(replicate_io(ggs::gglib::ggdatasource::DataSource*, file_def*, ggs::gglib::gglcr::CommonLCR const*, ggs::gglib::gglcr:: CommonLCR*, extr_ptr_def*, int*, int)+0x3847) [0x63ad27]] : [/u01/app/oracle/products/ogg/replicat(process_record(ggs::gglib::ggdatasource::DataSource*, file_def*&, ggs::gglib::gglcr::CommonLCR const*, ggs::gglib::gglc r::CommonLCR*, short&, extr_ptr_def*&, extr_ptr_def*&, int&, int&, int&, bool)+0x2f8) [0x63f018]] : [/u01/app/oracle/products/ogg/replicat(ggs::er::ReplicatContext::processReplicatLoop(ggs::Heartbeat::MapGeneratorParams&)+0x1061) [0x5f6cc1]] : [/u01/app/oracle/products/ogg/replicat(ggs::er::ReplicatContext::run(ggs::Heartbeat::MapGeneratorParams&)+0x29) [0x5eae39]] : [/u01/app/oracle/products/ogg/replicat() [0x633c7b]] : [/u01/app/oracle/products/ogg/replicat(ggs::gglib::MultiThreading::MainThread::ExecMain()+0x60) [0x6ecbe0]] : [/u01/app/oracle/products/ogg/replicat(ggs::gglib::MultiThreading::Thread::RunThread(ggs::gglib::MultiThreading::Thread::ThreadArgs*)+0x14d) [0x6edbfd]] : [/u01/app/oracle/products/ogg/replicat(ggs::gglib::MultiThreading::MainThread::Run(int, char**)+0xb1) [0x6edce1]] : [/u01/app/oracle/products/ogg/replicat(main+0x3b) [0x636c9b]] : [/lib64/libc.so.6(__libc_start_main+0xfd) [0x37cba1ed1d]] : [/u01/app/oracle/products/ogg/replicat() [0x56c559]] 2018-10-23 14:39:05
ERROR OGG-01296 Error mapping from MING.T3 to MING.T3. |
复制进程修改参数，添加 handlecollisions
map ming.t3, target ming.t3,handlecollisions; |
启动复制进程
start rep_mi01
GGSCI (ORADB-8955.datadept.eastmoney.com.sh) 79> stats REP_MI01,table ming.t3,total
Sending STATS request to REPLICAT REP_MI01 ...
Start of Statistics at 2018-10-23 14:53:21.
Replicating from MING.T3 to MING.T3:
*** Total statistics since 2018-10-23 14:53:03 *** Total inserts 0.00 Total updates 0.00 Total deletes 1.00 Total discards 0.00 Total operations 1.00 Total delete collisions 1.00
End of Statistics |
Update 实验
去掉 handlecollisions 参数，源端插入数据抽取进程并跳过这些差异数据。
源端
SQL> select * from t3;
A EUTIME B ---------- --------------- ---------- 1 3 2 22-OCT-18 3 3 22-OCT-18 3 5 23-OCT-18 3 6 23-OCT-18 3 4 23-OCT-18 3
6 rows selected. |
目标端
SQL> select * from t3;
A EUTIME B ---------- --------------- ---------- 1 3 2 22-OCT-18 3 3 22-OCT-18 3
3 rows selected.
|
源端 update 一条数据并提交：
SQL> update t3 set a=7,b=4 where a=6; |
目标端复制进程 abend
2018-10-23 15:06:20 WARNING OGG-01004 Aborted grouped transaction on 'MING.T3', Database error 1403 (OCI Error ORA-01403: no data found, SQL TIME" = :a4,x."B" = :a5 WHERE x."A" = :b0>). 2018-10-23 15:06:20 WARNING OGG-01003 Repositioning to rba 5635 in seqno 7. 2018-10-23 15:06:20 WARNING OGG-01154 SQL error 1403 mapping MING.T3 to MING.T3 OCI Error ORA-01403: no data found, SQL a5 WHERE x."A" = :b0>. Source Context : SourceModule : [er.errors] SourceID : [/scratch/aime/adestore/views/aime_adc4150330/oggcore/OpenSys/src/app/er/errors.cpp] SourceFunction : [take_rep_err_action] SourceLine : [941] ThreadBacktrace : [15] elements : [/u01/app/oracle/products/ogg/libgglog.so(CMessageContext::AddThreadContext()+0x1b) [0x7f552516e4eb]] : [/u01/app/oracle/products/ogg/libgglog.so(CMessageFactory::CreateMessage(CSourceContext*, unsigned int, ...)+0x135) [0x7f55251685c5]] : [/u01/app/oracle/products/ogg/libgglog.so(_MSG_ERR_MAP_TO_TANDEM_FAILED(CSourceContext*, ggs::gglib::ggapp::CQualDBObjName<(DBObjType)1> const&, ggs::gglib::g gapp::CQualDBObjName<(DBObjType)1> const&, CMessageFactory::MessageDisposition)+0x50) [0x7f5525161c7c]] : [/u01/app/oracle/products/ogg/replicat(take_rep_err_action(short, int, char const*, extr_ptr_def*, std_rec_hdr_def*, char*, file_def*, bool)+0x17aa) [0x5b63ef ]] : [/u01/app/oracle/products/ogg/replicat(replicate_io(ggs::gglib::ggdatasource::DataSource*, file_def*, ggs::gglib::gglcr::CommonLCR const*, ggs::gglib::gglcr:: CommonLCR*, extr_ptr_def*, int*, int)+0x3847) [0x63ad27]] : [/u01/app/oracle/products/ogg/replicat(process_record(ggs::gglib::ggdatasource::DataSource*, file_def*&, ggs::gglib::gglcr::CommonLCR const*, ggs::gglib::gglc r::CommonLCR*, short&, extr_ptr_def*&, extr_ptr_def*&, int&, int&, int&, bool)+0x2f8) [0x63f018]] : [/u01/app/oracle/products/ogg/replicat(ggs::er::ReplicatContext::processReplicatLoop(ggs::Heartbeat::MapGeneratorParams&)+0x1061) [0x5f6cc1]] : [/u01/app/oracle/products/ogg/replicat(ggs::er::ReplicatContext::run(ggs::Heartbeat::MapGeneratorParams&)+0x29) [0x5eae39]] : [/u01/app/oracle/products/ogg/replicat() [0x633c7b]] : [/u01/app/oracle/products/ogg/replicat(ggs::gglib::MultiThreading::MainThread::ExecMain()+0x60) [0x6ecbe0]] : [/u01/app/oracle/products/ogg/replicat(ggs::gglib::MultiThreading::Thread::RunThread(ggs::gglib::MultiThreading::Thread::ThreadArgs*)+0x14d) [0x6edbfd]] : [/u01/app/oracle/products/ogg/replicat(ggs::gglib::MultiThreading::MainThread::Run(int, char**)+0xb1) [0x6edce1]] : [/u01/app/oracle/products/ogg/replicat(main+0x3b) [0x636c9b]] : [/lib64/libc.so.6(__libc_start_main+0xfd) [0x37cba1ed1d]] : [/u01/app/oracle/products/ogg/replicat() [0x56c559]] 2018-10-23 15:06:20 ERROR OGG-01296 Error mapping from MING.T3 to MING.T3. |
复制进程添加
map ming.t3, target ming.t3,handlecollisions; |
开启复制进程
start rep_mi01 |
handlecollisions 变 update 为 insert 了
SQL> select * from t3;
A EUTIME B ---------- --------------- ---------- 1 3 2 22-OCT-18 3 3 22-OCT-18 3 7 23-OCT-18 4
4 rows selected. |
Insert 实验
目标端插入一条数据并提交
SQL> insert into t3(a,b) values(9,9); |
源端插入主键为 9 的数据
SQL> insert into t3(a) values(9); SQL> commit; SQL> select * from t3;
A EUTIME B ---------- --------------- ---------- 1 3 2 22-OCT-18 3 3 22-OCT-18 3 5 23-OCT-18 4 7 23-OCT-18 4 4 23-OCT-18 3 8 23-OCT-18 3 9 23-OCT-18 3
8 rows selected. |
目标端：
SQL> select * from t3;
A EUTIME B ---------- --------------- ---------- 1 3 2 22-OCT-18 3 3 22-OCT-18 3 7 23-OCT-18 4 5 23-OCT-18 4 8 23-OCT-18 3 9 23-OCT-18 3
7 rows selected. |
目标端复制进程没有 abend ，旧的数据被覆盖，以源端为主。
去掉复制进程中的 handlecollisions ，源端插入数据
SQL> insert into t3(a,b) values(10,10); SQL> commit; |
源端插入数据并提交
SQL> insert into t3(a) values(10); |
源端进程 abend
2018-10-23 15:36:46 WARNING OGG-00869 OCI Error ORA-00001: (MING. (status = 1), SQL
2018-10-23 15:36:46 WARNING OGG-01004 Aborted grouped transaction on 'MING.T3', Database error 1 (OCI Error ORA-00001: (MING. (status = 1), SQL "B") VALUES (:a0,:a1,:a2)>). 2018-10-23 15:36:46 WARNING OGG-01003 Repositioning to rba 6366 in seqno 7. 2018-10-23 15:36:46 WARNING OGG-01154 SQL error 1 mapping MING.T3 to MING.T3 OCI Error ORA-00001: (MING. (status = 1), SQL :a2)>. Source Context : SourceModule : [er.errors] SourceID : [/scratch/aime/adestore/views/aime_adc4150330/oggcore/OpenSys/src/app/er/errors.cpp] SourceFunction : [take_rep_err_action] SourceLine : [941] ThreadBacktrace : [15] elements : [/u01/app/oracle/products/ogg/libgglog.so(CMessageContext::AddThreadContext()+0x1b) [0x7f118d26c4eb]] : [/u01/app/oracle/products/ogg/libgglog.so(CMessageFactory::CreateMessage(CSourceContext*, unsigned int, ...)+0x135) [0x7f118d2665c5]] : [/u01/app/oracle/products/ogg/libgglog.so(_MSG_ERR_MAP_TO_TANDEM_FAILED(CSourceContext*, ggs::gglib::ggapp::CQualDBObjName<(DBObjType)1> const&, ggs::gglib::g gapp::CQualDBObjName<(DBObjType)1> const&, CMessageFactory::MessageDisposition)+0x50) [0x7f118d25fc7c]] : [/u01/app/oracle/products/ogg/replicat(take_rep_err_action(short, int, char const*, extr_ptr_def*, std_rec_hdr_def*, char*, file_def*, bool)+0x17aa) [0x5b63ef ]] : [/u01/app/oracle/products/ogg/replicat(replicate_io(ggs::gglib::ggdatasource::DataSource*, file_def*, ggs::gglib::gglcr::CommonLCR const*, ggs::gglib::gglcr:: CommonLCR*, extr_ptr_def*, int*, int)+0x3847) [0x63ad27]] : [/u01/app/oracle/products/ogg/replicat(process_record(ggs::gglib::ggdatasource::DataSource*, file_def*&, ggs::gglib::gglcr::CommonLCR const*, ggs::gglib::gglc r::CommonLCR*, short&, extr_ptr_def*&, extr_ptr_def*&, int&, int&, int&, bool)+0x2f8) [0x63f018]] : [/u01/app/oracle/products/ogg/replicat(ggs::er::ReplicatContext::processReplicatLoop(ggs::Heartbeat::MapGeneratorParams&)+0x1061) [0x5f6cc1]] : [/u01/app/oracle/products/ogg/replicat(ggs::er::ReplicatContext::run(ggs::Heartbeat::MapGeneratorParams&)+0x29) [0x5eae39]] : [/u01/app/oracle/products/ogg/replicat() [0x633c7b]] : [/u01/app/oracle/products/ogg/replicat(ggs::gglib::MultiThreading::MainThread::ExecMain()+0x60) [0x6ecbe0]] : [/u01/app/oracle/products/ogg/replicat(ggs::gglib::MultiThreading::Thread::RunThread(ggs::gglib::MultiThreading::Thread::ThreadArgs*)+0x14d) [0x6edbfd]] : [/u01/app/oracle/products/ogg/replicat(ggs::gglib::MultiThreading::MainThread::Run(int, char**)+0xb1) [0x6edce1]] : [/u01/app/oracle/products/ogg/replicat(main+0x3b) [0x636c9b]] : [/lib64/libc.so.6(__libc_start_main+0xfd) [0x37cba1ed1d]] : [/u01/app/oracle/products/ogg/replicat() [0x56c559]] 2018-10-23 15:36:46 ERROR OGG-01296 Error mapping from MING.T3 to MING.T3. |
再次加入 handlecollisions 参数，目标端数据被修改为与源端一致。
总结：
1.handlecollisions 是复制进程参数 2. 对于 delete 操作，无 handlecollisions 参数，源端 delete 一条数据，目标端没有符合要求，那么复制进程会 abend ； 有 handlecollisions 参数，复制进程不会 abend ，目标端会跳过 delete 3. 对于 update 操作，无 handlecollisions 参数，源端 update 一条数据，目标端没有符合要求，那么复制进程会 abend ； 有 handlecollisions 参数，复制进程不会 abend ，目标端将 update 变为 insert ，将数据插入目标端。 4. 对于 insert 操作，无 handlecollisions 参数，源端 insert 一条数据，目标端违反了唯一性约束，那么复制进程会 abend ； 有 handlecollisions 参数，复制进程不会 abend ，目标端将按照源端数据，修改目标端违反唯一性约束的数据。 |
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