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From "Ruslan Dautkhanov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SQOOP-3022) sqoop export for Oracle generates tremendous amounts of redo logs
Date Thu, 13 Oct 2016 05:48:20 GMT

    [ https://issues.apache.org/jira/browse/SQOOP-3022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15570941#comment-15570941
] 

Ruslan Dautkhanov commented on SQOOP-3022:
------------------------------------------

Thanks a lot [~david.robson].

Yes, "oraoop.partitioned" set to "TRUE" and  "oraoop.oracle.append.values.hint.usage" to "ON"
combined do look it might be the solution for the excesive redo log generation on Oracle side.
Didn't know those options exist. Would it be possible to wait closing this issue some time
before I would run some sqoop export to Oracle tests?

> sqoop export for Oracle generates tremendous amounts of redo logs
> -----------------------------------------------------------------
>
>                 Key: SQOOP-3022
>                 URL: https://issues.apache.org/jira/browse/SQOOP-3022
>             Project: Sqoop
>          Issue Type: Bug
>          Components: codegen, connectors, connectors/oracle
>    Affects Versions: 1.4.3, 1.4.4, 1.4.5, 1.4.6
>            Reporter: Ruslan Dautkhanov
>              Labels: export, oracle
>
> Sqoop export for Oracle generates tremendous amounts of redo logs (comparable to export
size or more).
> We have put target tables in nologgin mode, but Oracle will still generate redo logs
unless +APPEND Oracle insert hint is used.
> See https://oracle-base.com/articles/misc/append-hint for examples.
> Please add an option for sqoop to generate insert statements in Oracle with APPEND statement.
Our databases are swamped with redo/archived logs whenever we sqoop data to them. This is
easily avoidable. And from business prospective sqooping to staging tables in nologgin mode
is totally fine.
> Thank you.



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