Consider a situation, we've scheduled a job which backups(Full) database at a interval of 2 hrs. Similarly two more jobs are scheduled, one for the differential and another for log backup scheduled at interval 30 mins and 5 mins each . We've started job ,After two hours all the three jobs will be fired(Full,Differential,Log) therefore which will be done first as they all are scheduled to same time.
1) If Full BackUp is performed, then diff(backup) will be of Zero changes?
2) Similarly what will be case of transaction, and how can we know which fired first rather than using LSN (EASY METHOD to know).
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I am using mysql 5.7 and I scheduled some simple BI calculation using events.
The events are scheduled every 1 hour and I need to know duration of each execution to evaluate if the event can be scheduled every 30 mins.
I can use
SELECT * FROM INFORMATION_SCHEMA.events;
to find events' status, last run time, last altered time, etc. But where to find the execution log of events?
We have a daily process that creates a large innodb table and drops the table created two days before. The table is roughly 20G of data and another 20G of index. The storage usage graph shows:
Day 25 88G then a spike to 120G during the processing
Day 26 106G then a spike to 139G during the processing
Day 27 124G then a spike to 157G during the processing
Day 28 142G
The problem is 18G is NOT being freed in the table drop.
select ##innodb_file_per_table results 1, which I interpret it as ON
What can be done to prevent the 20G a day in unused space wastage? I suspect there is a billing impact?
These could be your CloudSQL backups. The automated backups backup data every four hours automatically. You can check if that's what it is. Temporal data would be gone if you restart, so we can try that as well to eliminate that possibility.
Actually the extra 18G per day was the transaction logs that where retained for 7 days. So after peaking at 200G after 7 days, for some reason it settled into a pattern of 140G during the day and peaking to 160G when the next day's data set is processes and old one dropped.
How can we apply time scheduler on DATETIME(MySql) data type.
For example - Let's say time is given like '2020-01-20 11:01:00'and scheduler timing is 30 minutes starts from 00:00.
You might want to do a CRON job with the setting 0 30 0 20 1 2020.
I'm sending alerts out when a scheduled job has ended. I'm selecting records where end date and time equal NOW(). The script runs every minute via cronjob.
WHERE TIMESTAMP(end_date, end_time) = NOW()
The alerts are not being sent out because the cronjob is running every minute and I'm selecting records based on NOW(), which is to the second. So it's almost impossible that the script is run at the same time a job ends.
Is there anyway I can select records which have an end time within the current minute which the cronjob runs? I want to make sure I'm catching these jobs as soon as they end.
I have a SQL job schedule to run daily. There are 8 jobs running with the same schedule. 6 jobs run properly. The remaining two run only once when i start the jobs manually, subsequent recurring runs never happen. There is no information about these two in job history.
It looks like the scheduler does not invoke the mentioned two jobs at all.
Workaround: set the schedule to run once in 24 hours, added start time and end times with 30 minutes of interval.