Release Notes › Known Issues › Tracking ID 221-75: Incorrect Timestamp For Events Captured Immediately Before DST Ends

Tracking ID 221-75: Incorrect Timestamp For Events Captured Immediately Before DST Ends

Events captured in the hour before Daylight Saving Time (DST) ends are stored in the CMS database with an incorrect timestamp. Specifically, CA DataMinder fails to take account of clocks being adjusted backward at the end of DST, so events captured in the preceding hour are stored with a timestamp that is +1:00 hour later than it should be. In the worst case, the iConsole may report events as being captured in the wrong order. For example, the iConsole may show an email reply as being captured before the original email was sent.

The problem only affects CMSs in time zones that use DST. Also, it can only occur once a year in the 60 minute window before DST ends. Customers are unlikely to experience this anomaly because DST typically ends at a time of low business activity (for example, at 2am on a Sunday).

However, there are plausible conditions under which a customer may experience this problem. For example, consider the following setup:

• A CMS is in San Francisco, where Pacific Daylight Time (PDT) ends at 2am on 4 November 2012. When PDT ends, San Francisco reverts to 1am Pacific Standard Time (PST).
• CA DataMinder email agents are deployed in Israel and capture two emails on Sunday morning, 4 November. On this date, Israel is on Israel Standard Time (IST). The first email is captured at 10:45 IST. The second email is captured at 11:15 IST.

  But CA DataMinder incorrectly converts the timestamp for the 10:45 email to 09:45 UTC.

• An iConsole reviewer based in Israel reviews the captured emails later in the same week. The iConsole reports the second email as being captured before the first email.

In this example, the CMS timestamp for email #1 is incorrect. The correct timestamp, taking account of the clock adjustment at the end of DST, should be 08:45 UTC.

Note: PDT is UTC-07:00. PST is UST-08:00. IST is UTC+02:00.