Mysql load error, help?

Hi all

I'm just trying to load a data from a DB MYSQL 5.1 to oracle 10g, but every time this error occurs about 2 hours of racing.
Is anyone know why?... .This is very frustrating because I did some research on google and I found nothing.

Help, please?

-----------
0: S 08, 01: com.mysql.jdbc.CommunicationsException: Communications link failure

Last packet sent to the server was there is 7205168 ms.
com.mysql.jdbc.CommunicationsException: Communications link failure

Last packet sent to the server was there is 7205168 ms.

at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1070)

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3009)

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2895)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3438)

at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1951)

at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2101)

at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2554)

at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1761)

at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1912)

at com.sunopsis.sql.SnpsQuery.executeQuery (SnpsQuery.java)

at com.sunopsis.dwg.dbobj.SnpSessTaskSql.execCollOrders (SnpSessTaskSql.java)

at com.sunopsis.dwg.dbobj.SnpSessTaskSql.treatTaskTrt (SnpSessTaskSql.java)

at com.sunopsis.dwg.dbobj.SnpSessTaskSqlC.treatTaskTrt (SnpSessTaskSqlC.java)

at com.sunopsis.dwg.dbobj.SnpSessTaskSql.treatTask (SnpSessTaskSql.java)

at com.sunopsis.dwg.dbobj.SnpSessStep.treatSessStep (SnpSessStep.java)

at com.sunopsis.dwg.dbobj.SnpSession.treatSession (SnpSession.java)

at com.sunopsis.dwg.cmd.DwgCommandSession.treatCommand (DwgCommandSession.java)

at com.sunopsis.dwg.cmd.DwgCommandBase.execute (DwgCommandBase.java)

at com.sunopsis.dwg.cmd.e.i (e.java)

at com.sunopsis.dwg.cmd.g.y (g.java)

at com.sunopsis.dwg.cmd.e.run (e.java)

at java.lang.Thread.run (unknown Source)

Caused by: java.net.SocketException: connection reset

at java.net.SocketInputStream.read (unknown Source)

at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:113)

at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:160)

at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:188)

at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2452)

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2906)

... more than 20
---------------------------

Published by: Questbr on 08/05/2009 07:30

One of the things that is more costly to do during the integration of the data is physically on the network or between processes. If you have the agent installed on the same physical server as Server data source or target, then when moving data, it takes to move over the network only once. As you are dealing with a relatively large amount of data, this becomes important.
Yet once, in dealing with large volumes of data, the use of the extract in bulk & load is alos important. On the side of the extract, the overhead is quite similar. It is on the side of the load that it makes the most difference. If you are able to bulk load into your target, Chargers in bulk can load up something like 40,000 lines per second, while you will not be able to INSERT more than a few thousand at best. The overload imposed on the target database is also very different, with the charger in bulk having a small effect for a small period of time, unlike many insert statements, which will be a large overload over a long period of time.
Overall, ODI you take that approach you want, so this allows you to balance the load on your database server and a network based on the capabilities and limitations of your environment.
Whatever it is, you really want to bulk - tables outside or SQL * Loader for this volume of data on your oracle server.

Tags: Business Intelligence

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