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Posted to derby-dev@db.apache.org by "Knut Anders Hatlen (JIRA)" <ji...@apache.org> on 2010/04/07 15:15:33 UTC
[jira] Assigned: (DERBY-4582) Timestamps inserted with GMT calendar
are 1 hour later when subsequently read with GMT calendar (Server Mode
Only).
[ https://issues.apache.org/jira/browse/DERBY-4582?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Knut Anders Hatlen reassigned DERBY-4582:
-----------------------------------------
Assignee: Knut Anders Hatlen
> Timestamps inserted with GMT calendar are 1 hour later when subsequently read with GMT calendar (Server Mode Only).
> -------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-4582
> URL: https://issues.apache.org/jira/browse/DERBY-4582
> Project: Derby
> Issue Type: Bug
> Components: Network Client
> Affects Versions: 10.5.3.0
> Environment: Windows XP Professional Version 2002 Service Pack 3, Central Standard Time Zone (America/Chicago)
> Reporter: Keith Kruse
> Assignee: Knut Anders Hatlen
> Attachments: DerbyTest.java
>
>
> This issue only appears to happen in Network Server/Client mode. Embedded mode does not have the issue.
> My timezone is American/Chicago. Saving timestamps with values for the 6 hours prior to DST start are being read back in as values 1 hour later than written. (I believe the issue happens on the write because values written in Network Server/Client mode and read in Embedded mode are incorrect, while values written and read in Embedded mode are corect.)
> Values between 3/13/2010 - 20:00 CST and 3/14/2010 - 02:00 CST will return timstamps 1 hour off. The "setTimestamp" method is being passed a GMT calendar with the timestamp:
> I have a complete test class I can attach, but here is a summary:
> private final TimeZone gmtTZ = TimeZone.getTimeZone("GMT");
> private final Calendar gmtCal = Calendar.getInstance(gmtTZ);
> ...
> String sql = "INSERT INTO app.dst_test (id, gmt_timestamp, milli_time) VALUES(?,?,?)";
> String sql2 = "SELECT * from app.dst_test where id=?";
> ...
> ps.setTimestamp(2, ts, gmtCal);
> ...
> Timestamp tsRead = rs.getTimestamp("gmt_timestamp", gmtCal);
> ...
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