Błąd podczas eksportowania pola klasy clob z oracle do pola tekstowego na Azure DB

Question

Mam pole CLOB w tabeli Oracle, która przechowuje plik PDF. Kiedy próbuję eksportować to pole do SQL Server Db na Azure mam ten błąd:

2017/01/19 11:14:32 - ImpostoRenda 2.0 - ERROR (version 6.1.0.1-196, build 1 from 2016-04-07 12.08.49 by buildguy) : Unexpected batch update error committing the database connection. 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - ERROR (version 6.1.0.1-196, build 1 from 2016-04-07 12.08.49 by buildguy) : org.pentaho.di.core.exception.KettleDatabaseBatchException: 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - Error updating batch 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - I/O Error: Connection reset by peer: socket write error 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.core.database.Database.createKettleDatabaseBatchException(Database.java:1379) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.core.database.Database.emptyAndCommit(Database.java:1368) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.trans.steps.tableoutput.TableOutput.dispose(TableOutput.java:575) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.trans.step.RunThread.run(RunThread.java:96) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at java.lang.Thread.run(Unknown Source) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - Caused by: java.sql.BatchUpdateException: I/O Error: Connection reset by peer: socket write error 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at net.sourceforge.jtds.jdbc.JtdsStatement.executeBatch(JtdsStatement.java:969) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.core.database.Database.emptyAndCommit(Database.java:1355) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - ... 3 more 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - ERROR (version 6.1.0.1-196, build 1 from 2016-04-07 12.08.49 by buildguy) : Unexpected error rolling back the database connection. 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - ERROR (version 6.1.0.1-196, build 1 from 2016-04-07 12.08.49 by buildguy) : org.pentaho.di.core.exception.KettleDatabaseException: 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - Error performing rollback on connection 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - Invalid state, the Connection object is closed. 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.core.database.Database.rollback(Database.java:854) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.core.database.Database.rollback(Database.java:832) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.trans.steps.tableoutput.TableOutput.dispose(TableOutput.java:610) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.trans.step.RunThread.run(RunThread.java:96) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at java.lang.Thread.run(Unknown Source) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - Caused by: java.sql.SQLException: Invalid state, the Connection object is closed. 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at net.sourceforge.jtds.jdbc.ConnectionJDBC2.checkOpen(ConnectionJDBC2.java:1699) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at net.sourceforge.jtds.jdbc.ConnectionJDBC2.rollback(ConnectionJDBC2.java:2100) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - at org.pentaho.di.core.database.Database.rollback(Database.java:845) 
2017/01/19 11:14:32 - ImpostoRenda 2.0 - ... 4 more 

Ale, jeśli mogę wykonać to samo przekształcić do lokalnego serwera SQL DB, to działa dobrze.

Jak rozwiązać ten problem?

UPDATE 1

zdałem sobie sprawę, że właśnie wtedy, gdy kładę "Commit Size" większy niż 15 i prawidłowo ustawione na "Użyj aktualizacji partii dla wkładek" w moim TableOutput kroku, pojawia się problem.

Answer 1

Można spróbować zmodyfikować parametry TCP na kliencie:

REG ADD HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters /v KeepAliveTime /t REG_DWORD /d 30000 
REG ADD HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters /v KeepAliveInterval /t REG_DWORD /d 1000 
REG ADD HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters /v TcpMaxDataRetransmission /t REG_DWORD /d 10