Busycal backup delete old5/16/2023 ![]() ![]() Log Job History (OLA DatabaseBackup - USER_DATABASES - LOG) Processed 2 pages for database 'StackExchange', file 'StackExchange_log' on file 1.īACKUP DATABASE successfully processed 378 pages in 0.027 seconds (109.103 MB/sec).īackup of the Transaction Log with Ola's scripts Processed 376 pages for database 'StackExchange', file 'StackExchange' on file 1. WITH COPY_ONLY, COMPRESSION, RETAINDAYS = 3, NOFORMAT, NOINIT, NAME = N'StackExchange-Full Backup Sichern', SKIP, NOREWIND, using Ola's scriptsīACKUP DATABASE TO DISK = 'C:\adhoc\StackExchange_Full_CopyOnly_20171221_082242.bak' I tested this using my StackExchange database: will still permit you to restore the database to a consistent state using the FULL COPY_ONLY backup and the available Transaction Log backups. ![]() Safety firstĬreating a backup with the BACKUP DATABASE. Works as designed, because a BACKUP DATABASE. This is a fail-safe mechanism and not meant to be used as a general feature. ) which have occurred before that backup and only if the is lower than when the FULL Backup occurred. (Full Backup) and then to delete the transaction logs backups ( BACKUP LOG. Ola designed his script to check for the last BACKUP DATABASE. Why? Because setting might be a bad idea. You might want to have a quick look at my accepted answer here which was posted in reference to the question Need suggestion on Back up Strategy to give you some ideas about RTO and RPO. I'll explain while I'm making this assumption. In my opinion you may have taken a shortcut in the thought process. There are one or two things to think about here. Your setting was probably based on a wrong understanding of Ola's script. The retention policies allow me to reach the RTO and RPO laid out by the business even if the (tape) backup solution is down for a day.īackups will still work and be compliant with RTO and RPO even if the network (as a whole or only partially) is down for a day. The DIFF and FULL backups occur before the tape backups start and are normally finished before the tape backups start. Test systems are allowed to thrash the storage during the day. I differentiate between SAP and non-SAP because of the sizes of the databases. No lumping of massive I/O on the disk at the full hours (FULL) or quarterly hours (TLOG). īy distributing the backup times to different slots, I am evenly distributing the disk I/O on the storage systems. This can be 10:00 in the morning or at 14:00 in the afternoon for full and xx:15 for the Transaction Log backups. The test system will be backed up during production hours. Monday - Saturday 20:00 (non-SAP systems).Quarter Hourly xx:10, xx:25, xx:40, xx:55 (SAP systems).My personal implementation is to have a the following schedules/retention policies: Production systems Working with Ola's solution is an absolute breeze, IF you make one or two thoughts on how you want to recover a database and based on your businesses RPO and RTO. You have to ensure that you can accommodate for any failures down the line and still guarantee to the stake-holders that your solution will be 99.% fool proof. Īt any given point-in-time something will fail. Your data is still on disk, even if the network goes down and.Your data is still on disk, even if you create a COPY_ONLY backup.You are no longer relying on Ola's fail-safe mechanism.to keep additional hours worth of Transaction Log backups on your database server's disks. Looking at the above questions consider using a different cleanup time (e.g. What do you want to be able to restore?.When does the full database backup occur?.When does this (tape) backup occur? Guaranteed?.What happens if your network backup fails?. ![]() Why? Because the value 0 will only work together with the built-in fail-safe mechanism.Īt some point-in-time your Transaction Log backups (and Full backups?) are copied to a network drive and backed up from there by means of a backup solution, possibly combined with some kind of tape and/or disk storage. Part II of II (had to split my answer) Doing it betterĬonsidering your RPO and RTO defined by your business, you now might want to alter the parameter of the to something higher than 0.
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