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https://issues.apache.org/jira/browse/JCR-4611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17153348#comment-17153348
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Julian Reschke commented on JCR-4611:
-------------------------------------
Does this apply for non-obsolete versions of Jackrabbit as well?
> JackRabbit Oracle Bundle Schema NODE_ID Type Change to VarChar
> --------------------------------------------------------------
>
> Key: JCR-4611
> URL: https://issues.apache.org/jira/browse/JCR-4611
> Project: Jackrabbit Content Repository
> Issue Type: Improvement
> Components: core, indexing, jackrabbit-core, sql
> Affects Versions: 1.3
> Environment: Oracle 12g
> Reporter: Nicholas D. Jordan
> Priority: Minor
>
> I’m trying to understand the reasoning behind the oracle schema making the
> XXX_BUNDLE tables column NODE_ID of column type raw instead of a char or
> binary type?
>
> The reason that is driving this question is a performance issue when our
> application uses jackrabbit and the table XXX_BUNDLE is about 1M rows . The
> index XXX_BUNDLE_IDX on the XXX_BUNDLE.NODE_ID isn’t being used in selects
> and deletes. Changing the index to:
> (RAWTOHEX("NODE_ID")) yields some improvement. But ultimately changing the
> column type of NODE_ID to varchar(32) yielded the best results.
>
> I have output from SQL Developer's Sql Tune Advisor to support my claim. See
> results near the end.
>
> The new jackrabbit schema for XXX_BUNDLE was introduced in version 1.3:
> [http://svn.apache.org/repos/asf/jackrabbit/branches/1.3/jackrabbit-core/src/main/java/org/apache/jackrabbit/core/persistence/bundle/oracle.ddl]
>
> ------------ INFORMATION -----
> IDX_PM_VER_BUNDLE_NODEID = CREATE INDEX "IDX_PM_VER_BUNDLE_NODEID" ON
> "PM_VER_BUNDLE" (RAWTOHEX("NODE_ID"));
> Query: select * from jcr_user.pm_ver_bundle where node_id =
> 'FE0CDF71A86E47E0ADC428078DF43955';
> Scenario [1] : normal jackrabbit oracle schema since version 1.3
> Scenario [2] : normal jackrabbit oracle schema since version 1.3, but with
> new index IDX_PM_VER_BUNDLE_NODEID
> Scenario [3] : normal jackrabbit oracle schema since version 1.3, but node_id
> type is varchar(32)
> ------------ SQL TUNE ADVISOR RESULTS -----
>
> [1]
> -----------------------------------------------------------------------------------|
> Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time
>
> |-----------------------------------------------------------------------------------|
> 0 | SELECT STATEMENT | | 1 | 301 | 102 (0)|
> 00:00:01 ||* 1 | TABLE ACCESS FULL| PM_VER_BUNDLE | 1 | 301 | 102
> (0)| 00:00:01
> |-----------------------------------------------------------------------------------
>
> [2]
> ----------------------------------------------------------------------------------------------------------------|
> Id | Operation | Name | Rows
> | Bytes | Cost (%CPU)| Time
> |----------------------------------------------------------------------------------------------------------------|
> 0 | SELECT STATEMENT | | 105
> | 31605 | 49 (0)| 00:00:01 || 1 | TABLE ACCESS BY INDEX ROWID
> BATCHED| PM_VER_BUNDLE | 105 | 31605 | 49 (0)| 00:00:01 ||*
> 2 | INDEX RANGE SCAN | IDX_PM_VER_BUNDLE_NODEID | 42 |
> | 3 (0)| 00:00:01
> |----------------------------------------------------------------------------------------------------------------
>
> [3]
> -------------------------------------------------------------------------------------------------|
> Id | Operation | Name | Rows | Bytes | Cost
> (%CPU)| Time
> |-------------------------------------------------------------------------------------------------|
> 0 | SELECT STATEMENT | | 1 | 2020 |
> 1 (0)| 00:00:01 || 1 | TABLE ACCESS BY INDEX ROWID| PM_VER_BUNDLE |
> 1 | 2020 | 1 (0)| 00:00:01 ||* 2 | INDEX UNIQUE SCAN |
> PM_VER_BUNDLE_IDX | 1 | | 1 (0)| 00:00:01
> |-------------------------------------------------------------------------------------------------
>
>
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