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Announcement
RB Omo · Feb 9, 2022

February 9, 2022 – Alert: Incorrect Query Results

InterSystems has corrected a defect that can result in an SQL query returning incorrect results. This defect exists only in the 2021.2 (Continuous Delivery) version of:
Question
Lorenzo Scalese · Aug 7, 2023

How to unzip journal file?

set f1="C:\InterSystems\IRISHealth\mgr\journal\20230807.001z" set f2="C:\InterSystems\IRISHealth\mgr\journal\test20230807.001" write ##class(%SYS.Journal.File).Decompress(f1,f2) And
Question
Nezla · Feb 20, 2023

Restoring backup from journals

Also, you can't restore a complete database from journals unless you have all the journals from the time you created the database, which isn't very likely if you have been using the
Question
Sergey Pavlov · Jul 3, 2019

Is Indices rebuild should be journaled?

The entries created with object %Save are journaled correctly as far as I'm aware (I have this index at shadow in the first place).
Question
Undefined Undefined · Dec 26, 2024

Journal not applied to any directory

(Mounted)[Journal not applied to any directory] What does it mean that the last line after recovery shows 'Journal not applied to any directory '.
Question
Daniel Buxton · Sep 22, 2019

Lost my journal files

your journal drive fixed, taking a full backup of your databases and then start journaling from there.
Question
lw wei · Jul 17, 2019

journal restore failed with ZJRNFILT

/home/lw/mgr/journal/20190718.0082. /home/lw/mgr/journal/20190718.0093. /home/lw/mgr/journal/20190718.0104. /home/lw/mgr/journal/20190719.0015. /home/lw/mgr/journal/20190719.0026.
Article
Anastasia Dyubaylo · Mar 20, 2024

Celebrating a True Pillar of the Developer Community: A Journey of Dedication and Expertise

May Jesus bless you and your journey. Very impressed.
Announcement
Anastasia Dyubaylo · Feb 1, 2022

[Video] Join Us on a Journey from Caché/Ensemble to InterSystems IRIS

Learn about the easy process of migrating to InterSystems IRIS: ⏯ Join Us on a Journey from Caché/Ensemble to InterSystems IRIS 🗣 Presenter: @Jeffrey.Morgan, Sales
Question
Raghuram Devarakonda · Mar 30, 2017

How to perform journal restore programmatically?

Journal restore is already automatic unless Cache is started in maintenance mode.
Question
Rafael Vergani · Mar 21, 2017

Journal file I/O error

One of my journal spaces has status "IOER" in MSM MUMPS.I think this is happend during system freeze. I never seeing a journal file status like that.
Question
Tiago Ribeiro · Aug 30, 2017

Is it possible to stop journaling for a given class?

YES, map it to a namespace where Journal is disabledswitching on/of journalling at every write is overhead and fills the audit log that is journalled itself
Question
lw lw · Sep 7, 2023

Does mirroring support journal restore?

The DR is also not allowed to do journal restore. 1) Begin Journaling (^JRNSTART) 2) Stop Journaling (^JRNSTOP) 3) Switch Journal File (^JRNSWTCH) 4) Restore Globals From Journal
Question
Phillip Wu · Jul 27, 2022

IRIS when is it safe to delete Journals

I think it is safe to delete journals on LIVETC02 created prior to 24/07 23:59:59 as there should be no transactions spanning journal files because of journal switch of 25/07 @ 00:
Question
Julian Matthews · Nov 5, 2020

Impact of Journal File Size on MirrorDatabaseLatencyTime

the primary and when it was written to the journal disk.