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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6137) update/delete statement on table with trigger fails randomly with ERROR XSTA2
Date Thu, 11 Apr 2013 12:31:16 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13628878#comment-13628878
] 

Rick Hillegas commented on DERBY-6137:
--------------------------------------

Thanks, Andrew. You might want to test-drive the fix, which has been checked into the 10.11
trunk and backported to the 10.10 and 10.9 branches. Let me know if that fixes the problem
or just moves it around. Thanks.
                
> update/delete statement on table with trigger fails randomly with ERROR XSTA2
> -----------------------------------------------------------------------------
>
>                 Key: DERBY-6137
>                 URL: https://issues.apache.org/jira/browse/DERBY-6137
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions: 10.9.1.0, 10.11.0.0
>         Environment: $ java -version
> java version "1.6.0_43"
> Java(TM) SE Runtime Environment (build 1.6.0_43-b01)
> Java HotSpot(TM) 64-Bit Server VM (build 20.14-b01, mixed mode)
> Linux x86_64
>            Reporter: Andrew Clemons
>            Assignee: Rick Hillegas
>         Attachments: derby-6137-01-aa-dontClearSequenceCache.diff, derby-6137-01-ab-dontClearSequenceCache.diff,
derby-6137-02-aa-balanceFindWithRelease.diff, derby-6137.sql, derby_db_identity.log, derby_db.log
>
>
> I have an AFTER DELETE trigger on an exchange rate table which inserts data into a history
table. It uses a sequence for the key in the history table.
> Simplified it looks like this:
> CREATE TRIGGER TRG_EXCHANGE_RATES_HIST_DEL
> AFTER DELETE ON EXCHANGE_RATES
> REFERENCING OLD ROW AS OLD
> FOR EACH ROW
>  INSERT INTO EXCHANGE_RATE_HISTORY (ID_HISTORY, CUR_FROM, AMNT_FROM, CUR_TO, AMNT_TO,
AMNT_RATE, DAT_CREATION)
>    VALUES (( NEXT VALUE for HIST_SEQ ), OLD.CUR_FROM, OLD.AMNT_FROM, OLD.CUR_TO, OLD.AMNT_TO,
OLD.AMNT_RATE, CURRENT_TIMESTAMP);
> The sequence is defined as:
> create sequence HIST_SEQ
> increment by 1
> start with 10000001
>  no maxvalue
>  minvalue 10000001
> no cycle;
> Randomly when deleting data the statement will fail with:
> ERROR XSTA2: A transaction was already active, when attempt was made to make another
transaction active.
> I will attach the full stack trace. It looks like the sequence cache needs to be cleared
which causes a nested user transaction to start. But my delete statement is already running
as part of a transaction (non XA - spring managed - hibernate).
> We do not have this exception when testing with derby 10.8.2.2.
> I get the same exception after building and running the latest trunk version (revision
1463340, Bundle-Version: 10.11.0000000.1463340)
> To rule out the sequence on the history table, I switched it to use a generated column
(GENERATED ALWAYS AS IDENTITY (START WITH 10000001, INCREMENT BY 1)) but I still randomly
get the exception.
> All tables in the application use sequences for their primary keys (through Hibernate's
SequenceHiLoGenerator) so it seems to be possibly related to that.

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