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https://issues.apache.org/jira/browse/HIVE-16912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16051978#comment-16051978
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Naveen Gangam commented on HIVE-16912:
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[~aihuaxu] Thank you for the review. the {{SID}} portion of the JDBC URL,
{{solarsid}} is not the same as the schemaname. A SID is roughly equivalent to
database while a schema is a logical separation of tables within a database. So
one SID can have multiple schemas.
But that does give me an idea to see if there is a way to provide the schema
name as part of the URL. Let me do so research. But do you see an issue with
this approach though?
> Improve table validator's performance against Oracle
> ----------------------------------------------------
>
> Key: HIVE-16912
> URL: https://issues.apache.org/jira/browse/HIVE-16912
> Project: Hive
> Issue Type: Sub-task
> Components: Hive
> Affects Versions: 3.0.0
> Reporter: Naveen Gangam
> Assignee: Naveen Gangam
> Priority: Minor
> Attachments: HIVE-16912.patch
>
>
> Currently, this validator uses DatabaseMetaData.getTables() that takes in the
> order of minutes to return because of the number of SYSTEM tables present in
> Oracle.
> Providing a schema name via a system property would limit the number of
> tables being returned and thus improve performance.
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