Thank you Paul,
good experience, relation of sync and live txn is not clearly documented. Sufficient number of logical logs, CDR_QDATA_SBSPACE a SHM would be a must as well for syncing big databases.

Milan Raf
Senior Lead, Infrastructure/Cloud Architecture
Kyndryl Consult
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Kyndryl Česká republika, spol. s r. o.
Sídlo: V Parku 2308/8, Chodov, 148 00 Praha 4,
IČ: 096 28 886
Zapsaná v obchodním rejstříku, vedeném Městským soudem v Praze (oddíl C, vložka 339277)
Registered address: V Parku 2308/8, Chodov, 148 00 Prague 4
Company ID: 096 28 886
Registered in the Commercial Register maintained by the Municipal Court in Prague (Part C, Entry 339277)
Original Message:
Sent: 2/22/2024 11:19:00 AM
From: Paul Watson
Subject: RE: Syncing data using cdr sync
Should of added, I tend to avoid very large syncs during busy times
Cheers
Paul
Paul Watson
Oninit LLC
+1-913-387-7529
www.oninit.com
Oninit®️ is a registered trademark of Oninit LLC
Original Message:
Sent: 2/22/2024 11:15:00 AM
From: Paul Watson
Subject: RE: Syncing data using cdr sync
I have never had a issue with using sync on live systems and getting trans lost. I have always assume the 'live' transactions are delayed but..... never looked
Cheers
Oauk
On 2/22/2024 9:52 AM, Milan Rafaj via IBM TechXchange Community wrote:
0100018dd1846d4b-55cde07c-aebc-4652-8c94-478e6f3927ca-000000@email.amazonses.com"> Hello, I need to clarify how to use cdr sync cdr sync sends always ALL rows and apply them on target using conflict resolution Alway - to... -posted to the "Informix" group
Original Message:
Sent: 2/22/2024 10:52:00 AM
From: Milan Rafaj
Subject: Syncing data using cdr sync
Hello, I need to clarify how to use cdr sync
- cdr sync sends always ALL rows and apply them on target using conflict resolution Alway - to speed up we can truncate target table, in order to not update existing rows by sync process
- can we use normal transaction activities during the cdr sync? - how to avoid sync process overwriting change which happened after row is read by sync process in scenario:
1.row is read by sync and it is putted directly into send queue together with other rows read by sync process
2.the same row is changed by application later but this app txn is committed BEFORE sync trans is committed
In what order are those 2 transactions (application and sync) applied on target?
Thank you
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Milan
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