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Showing posts from November, 2011

Email Alerts are not received...

In one of application, Email alerts are sent using SQL sp_send_dbmail stored procedure. Email alerts were working properly, but suddenly noticed email alerts are not received.

To troubleshoot the issue, first I checked the msdb.dbo.sysmail_event_log table using the below query.

SELECT log_id, event_type, log_date, description, process_id, mailitem_id, account_id, last_mod_date, last_mod_user
FROM
msdb.dbo.sysmail_event_log 
ORDER BY
log_date DESC

If there is any error, you should see records with the event_type value as error.
In my case there are records with event_type value as error, and the description value for those records is same as below

The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 3 (2018-02-01T10:41:27). Exception Message: Cannot send mails to mail server. (The SMTP server requires a secure connection or the client was not authenticated. The server response was: Authentication required).  )

As per the error descript…

Errors in the back-end database access module. Nested table keys in a SHAPE query must be...

While working with SQL Data Mining, I got the below error when I tried to insert data to the mining structure.
Errors in the back-end database access module. Nested table keys in a SHAPE query must be sorted in the same order as the parent table. The nested query may be missing an ORDER BY clause.
But I checked the query and all are in the correct way. I create an SSIS package to find whether there is an issue with data and found that the above error message was raised due to some inaccurate data. When I ran the query by trimming the sorting column, query executed successfully. Since there are spaces in the sorting column, it thinks that columns are not sorted in the correct order and gives the above error message.