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Posted to oak-issues@jackrabbit.apache.org by "Ivar Suits (Jira)" <ji...@apache.org> on 2021/02/04 15:00:01 UTC

[jira] [Updated] (OAK-9345) Query performance issue

     [ https://issues.apache.org/jira/browse/OAK-9345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ivar Suits updated OAK-9345:
----------------------------
    Attachment: repository-config_rdb.json

> Query performance issue
> -----------------------
>
>                 Key: OAK-9345
>                 URL: https://issues.apache.org/jira/browse/OAK-9345
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: query
>         Environment: DocumentNodeStoreService: RDB
> Oracle 18C
> Jackrabbit OAK  1.36
>            Reporter: Ivar Suits
>            Priority: Critical
>         Attachments: repository-config_rdb.json, repository-config_rdb.json
>
>
> Added over 5 million documents to Jackrabbit OAK after that performance problems started with following query. Using Oracle DB for DocumentNodeStoreService  It s doing table access full scans.
> {code}
> select ID, MODIFIED, MODCOUNT, CMODCOUNT, HASBINARY, DELETEDONCE, VERSION, SDTYPE, SDMAXREVTIME, DATA, BDATA
>  from NODES where ID > :1
>  and ID < :2
>  order by ID FETCH FIRST ? ROWS ONLY
> {code}
> Looks like  Oracle DB  oes not like ID column index and switches to table full scan, because ID column is not number.    As a solution probably index hint need to be added and there should index name for ID column.
>  
>  



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