goldengate的HANDLECOLLISIONS参数

HANDLECOLLISIONS 是一个 replicat 进程参数，主要在 initial load 中使用。
在 replicat 进程中使用该参数时，即使目标数据库环境中存在数据完整性问题（如 update、delete 操作遇到缺失行或重复的插入操作），
replicat 进程仍然能够继续处理 trail 中的数据。

如果使用了 HANDLECOLLISIONS 参数，则 replicat 进程将按如下方式处理数据：
Missing updates are ignored.
Missing deletes are ignored.
Duplicate inserts are turned into updates.

如果要使用 HANDLECOLLISIONS 参数，只需在 replicat 进程参数文件中加入该参数，然后重启 replicat 进程即可生效。

--如果不使用此参数，双方表不一致，会出现进程挂起，如下的出错：
2013-08-29 15:40:33  WARNING OGG-00869  Oracle GoldenGate Delivery for Oracle, rep1.prm:  OCI Error ORA-00001: unique constraint (TEST.SYS_C0011221) violated (status = 1). INSERT INTO "TEST"."TEST1" ("AA") VALUES (:a0).
2013-08-29 15:40:33  WARNING OGG-01004  Oracle GoldenGate Delivery for Oracle, rep1.prm:  Aborted grouped transaction on 'TEST.TEST1', Database error 1 (OCI Error ORA-00001: unique constraint (TEST.SYS_C0011221) violated (status = 1). INSERT INTO "TEST"."TEST1" ("AA") VALUES (:a0)).
2013-08-29 15:40:33  WARNING OGG-01003  Oracle GoldenGate Delivery for Oracle, rep1.prm:  Repositioning to rba 1426 in seqno 2.
2013-08-29 15:40:33  WARNING OGG-01003  Oracle GoldenGate Delivery for Oracle, rep1.prm:  Repositioning to rba 1426 in seqno 2.
2013-08-29 15:40:33  ERROR   OGG-01296  Oracle GoldenGate Delivery for Oracle, rep1.prm:  Error mapping from TEST.TEST1 to TEST.TEST1.
2013-08-29 15:40:33  ERROR   OGG-01668  Oracle GoldenGate Delivery for Oracle, rep1.prm:  PROCESS ABENDING.

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2013-08-29 15:29:39  INFO    OGG-00996  Oracle GoldenGate Delivery for Oracle, rep2.prm:  REPLICAT REP2 started.
2013-08-29 15:29:39  WARNING OGG-01004  Oracle GoldenGate Delivery for Oracle, rep2.prm:  Aborted grouped transaction on 'TEST.TEST1', Database error 1403 (OCI Error ORA-01403: no data found, SQL <DELETE FROM "TEST"."TEST1"  WHERE "AA" = :b0>).
2013-08-29 15:29:39  WARNING OGG-01003  Oracle GoldenGate Delivery for Oracle, rep2.prm:  Repositioning to rba 1018 in seqno 0.
2013-08-29 15:29:39  WARNING OGG-01154  Oracle GoldenGate Delivery for Oracle, rep2.prm:  SQL error 1403 mapping TEST.TEST1 to TEST.TEST1 OCI Error ORA-01403: no data found, SQL <DELETE FROM "TEST"."TEST1"  WHERE "AA" = :b0>.
2013-08-29 15:29:39  WARNING OGG-01003  Oracle GoldenGate Delivery for Oracle, rep2.prm:  Repositioning to rba 1018 in seqno 0.
2013-08-29 15:29:39  ERROR   OGG-01296  Oracle GoldenGate Delivery for Oracle, rep2.prm:  Error mapping from TEST.TEST1 to TEST.TEST1.
2013-08-29 15:29:39  ERROR   OGG-01668  Oracle GoldenGate Delivery for Oracle, rep2.prm:  PROCESS ABENDING.