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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-1831) After a database shutdown, Network Server should invalidate all active connections and an appropriate error message should be thrown at the client while using those connections later.
Date Thu, 09 Jul 2009 08:18:14 GMT

     [ https://issues.apache.org/jira/browse/DERBY-1831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen updated DERBY-1831:
--------------------------------------

      Issue & fix info: [High Value Fix, Repro attached]  (was: [High Value Fix])
               Urgency: Normal
    Bug behavior facts: [Embedded/Client difference]

Triaged for 10.5.2.

> After a database shutdown, Network Server should invalidate all active connections and
an appropriate error message should be thrown at the client while using those connections
later.
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-1831
>                 URL: https://issues.apache.org/jira/browse/DERBY-1831
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server
>    Affects Versions: 10.0.2.0, 10.0.2.1, 10.1.1.0, 10.1.2.1, 10.1.3.1
>         Environment: Any
>            Reporter: Rajesh Kartha
>
> Any connections currently open during the shutdown should be invalidated. This would
indicate the correct info - that there are no open connections during the 'show connections'
command and the subsequent 'set connection' and sql should fail with appropriate errors. It
works as expected in embedded mode, but it is more important to behave accordingly in the
case of Network Server where multiple users are connected, rather than throw an obscure error
of "ERROR 58009: A network protocol error was encountered and the connection .............
implementation-specific condition for which there was no architected message " 
> ij version 10.2
> ij> connect 'jdbc:derby://localhost:1527/testdb;create=true' as connA;
> ij> drop table t;
> 0 rows inserted/updated/deleted
> ij> create table t (id int);
> 0 rows inserted/updated/deleted
> ij> insert into t values (1);
> 1 row inserted/updated/deleted
> ij> insert into t values (2);
> 1 row inserted/updated/deleted
> ij> select * from t;
> ID
> -----------
> 1
> 2
> 2 rows selected
> -- 
> --Connection A is still open
> -- 
> ij> connect 'jdbc:derby://localhost:1527/testdb' as connB;
> ij(CONNB)> insert into t values (3);
> 1 row inserted/updated/deleted
> ij(CONNB)> select * from t;
> ID
> -----------
> 1
> 2
> 3
> 3 rows selected
> -- 
> -- Should error out saying there are open connections to the database
> -- 
> ij(CONNB)> connect 'jdbc:derby://localhost:1527/testdb;shutdown=true';
> ERROR 08006: DERBY SQL error: SQLCODE: -1, SQLSTATE: 08006, SQLERRMC: Database 'testdb'
shutdown.
> ij(CONNB)> disconnect;
> -- 
> --Connection A is still open
> -- 
> ij> show connections;
> CONNA - jdbc:derby://localhost:1527/testdb;create=true
> No current connection
> -- 
> --Set connection to connection A
> -- 
> ij> set connection connA;
> -- 
> --Try a sql
> -- 
> ij> select * from t;
> ERROR 58009: A network protocol error was encountered and the connection has been terminated:
the requested command encountered an unarchitected and implementation-specific condition for
which there was no architected message
> ij>
> In embedded the ''shutdown=true'  closes all active connections to the database.
> ij(CONNB)> connect 'jdbc:derby:testdb;shutdown=true';
> ERROR 08006: Database 'testdb' shutdown.
> ij(CONNB)> disconnect;
> --
> -- Shows no current connections after a shutdown
> -- 
> ij> show connections;
> No current connection
> ij> set connection connA;
> IJ ERROR: No connection exists with the name CONNA
> ij> select * from t;
> IJ ERROR: Unable to establish connection
> ij>
> Furthermore a related issue  DERBY-1737 -  need to check for existing connections before
shutdown is marked as an improvement.

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