goldengate的HANDLECOLLISIONS引數

HANDLECOLLISIONS 是一個 replicat 程式引數，主要在 initial load 中使用。
在 replicat 程式中使用該引數時，即使目標資料庫環境中存在資料完整性問題（如 update、delete 操作遇到缺失行或重複的插入操作），
replicat 程式仍然能夠繼續處理 trail 中的資料。

如果使用了 HANDLECOLLISIONS 引數，則 replicat 程式將按如下方式處理資料：
Missing updates are ignored.
Missing deletes are ignored.
Duplicate inserts are turned into updates.

如果要使用 HANDLECOLLISIONS 引數，只需在 replicat 程式引數檔案中加入該引數，然後重啟 replicat 程式即可生效。

--如果不使用此引數，雙方表不一致，會出現程式掛起，如下的出錯：
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.