![]() ![]() If the Global trace command returns 1 in the output windows, then the deadlock trace is enabled. Reboot the RDS DB instance for the changes to take effect.Īfter the RDS DB instance comes online, you can verify the deadlock trace status by running DBCC TRACESTATUS ( 1222, 1204) on your RDS DB instance. From the Databases page, choose your RDS DB instance, and then choose Actions.If you have created a new parameter group, proceed with step 4. If you used an existing parameter group, skip step 4 as you do not need to reboot your RDS DB instance. Wait until it has returned to the available status. Note: Your RDS DB instance is now in the modifying status. From the Scheduling of modifications section, choose Apply immediately, and then choose Modify DB Instance.This makes sure that the SQL Server error logs are published to CloudWatch Logs. From the Error logs section, choose the box for Error log.Push the SQL Server error log to Amazon CloudWatch Note: Creating a new parameter group and attaching it to an RDS DB instance requires that you reboot the RDS DB instance for the changes to take effect. From the Database options section, for DB parameter group, choose the parameter group that you created.In the DB identifier section, choose your RDS DB instance.From the navigation pane, choose Databases. ![]() Choose Edit parameters, and check the box beside 12.On the Parameter groups page, choose the group that you created in the previous step.Enter a Group name and Description, and then choose Create.For example, SQL Server 2016 Enterprise Edition uses sqlserver-ee-13.0. For Parameter group family, choose the SQL Server version and edition you are using.Open the Amazon RDS console, and then choose Parameter groups from the navigation pane.Note: If you have an existing custom parameter group, then skip to step 5. ResolutionĮnable trace flags through RDS Parameter groups Next, publish SQL Server error logs to Amazon CloudWatch and create CloudWatch alarms and Amazon Simple Notification Service (Amazon SNS) notifications that send an alert whenever a deadlock event occurs. ![]() To resolve this issue, enable deadlock trace flags (1222, 1204) to capture deadlock events in the SQL error logs. The victim transaction is rolled back and error code 1205 is posted in the error logs. If a deadlock event is detected, then SQL Server uses a resource/cost-based mechanism to declare one of the transactions a deadlock victim. SQL Server uses a lock monitor thread to monitor deadlock events. ![]()
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