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https://issues.apache.org/jira/browse/DERBY-1520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12482138
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A B commented on DERBY-1520:
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Laura > Unfortnately it's not that simple. Since the patch derby1520_3.diff was 
commited, 

If the fact that the patch has been committed is really a problem, couldn't you 
(as a committer) simply revert the change, create a fresh patch that has 
whatever the correct changes are, and then re-commit the corrected patch?

To "revert" or "back out" a committed patch you just run the "merge" command 
with the revision number(s) in reverse, then svn add/delete files just like for 
a normal patch. Ex.

   svn merge -r 518684:518683 
https://svn.apache.org/repos/asf/db/derby/docs/trunk

should revert the patch for this issue in your local client; then if you do an 
"svn commit" that should effectively back-out the changes...

Maybe usfeul, maybe not.  Just thought I'd mention it.  Note that I don't 
actually have a doc trunk on my machine so I can't guarantee that the above 
command will work; but I ran a similar command on the my local trunk as a test 
and it seems to have done the trick.

PS I do still plan to review the changes for this issue; the latest version is 
looking a lot better, but there are still some clarifications that I think 
would be good.  Hoping to get to that in the next couple of days...

> Document new SYSCS_DIAG tables
> ------------------------------
>
>                 Key: DERBY-1520
>                 URL: https://issues.apache.org/jira/browse/DERBY-1520
>             Project: Derby
>          Issue Type: Sub-task
>          Components: Documentation
>    Affects Versions: 10.2.1.6
>            Reporter: Stan Bradbury
>         Assigned To: Laura Stewart
>         Attachments: derby1520_1.diff, derby1520_2.diff, derby1520_3.diff, 
> derby1520_4.diff, refderby.ditamap, rrefsyscsdiagtables.html, 
> rrefsyscsdiagtables.html
>
>
> See comments for DERBY-571 for initial documentation discussion.  The new 
> tables (mapped to the old Diagnostic VTIs) are:
> The old style syntax will remain in place for 10.2, but become deprecated.
> The tables to be implemented in this change are:
> SYSCS_DIAG.LOCK_TABLE replaces org.apache.derby.diag.LockTable
> SYSCS_DIAG.STATEMENT_CACHE replaces org.apache.derby.diag.StatementCache
> SYSCS_DIAG.TRANSACTION_TABLE replaces org.apache.derby.diag.TransactionTable
> SYSCS_DIAG.ERROR_MESSAGES replaces org.apache.derby.diag.ErrorMessages 
> The information about the tables can be found in the javadoc for the class 
> listed above.
> That can be found at:
> http://db.apache.org/derby/javadoc/engine/
> click on the org.apache.derby.diag link in the Packages table, then select 
> each class, e.g. LockTable to see the info.

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