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Db2 LUW - SQL replication should optionally use TRUNCATE when performing a Full Refresh of large tables
Db2 LUW SQL Replication (10.2.1)
When you run a Full Refresh of a subscription set, the asnapply utility issues a DELETE FROM <target table> prior to the refresh of the data.
For large tables this has a significant and unnecessary overhead...
Document process for publication as opposed to subscription migration
The manuals document the process to migrate ALL *subscriptions* to a new Q capture task. Our scenario involved migrating single publications one-by-one (by sendq) to an existing actively used Q capture task. Please update the replication guide for...
MS SQL SERVER 2017/2019 Replication target/source support
Now is mid of 2019, but the latest MS SQL Server support is version 2016. Customer is upgrading their MS SQL Server to 2017 and above. And found the Queue Replication does not support the new 2017 server. Failed to create control table.
Display of replication throughput per subscription
Today Q Apply stores detailed performance statistics on queue level. This idea raises the request to store certain Q Apply throuput statistics (like rows_processed) on subscription level. Background: Today it is very difficult / sometime impossibl...
The Q-Replication apply programm shall be able to call the Db2 High Performance Unload (HPU) utility by the HPU stored procedure
in enterprise warehouse and OLTP areas of DB2 installations exist often very big databases with several tera bytes (often 100 of TBs) of data.
For example we have several OLTP databases with more than 20TB and tables with billion of recor...
Q-Replication Apply program shall be able to recognize if a column-organized table contains already a dictionary
the current implementation of the Q-Replication apply program for an automatic LOAD operation on column-organized target tables does not recognize if a dictionary already exist.
A column compression dictionary is used to compress data...
Customer met poor performance of spill agent issue recently. And would like to request this enhancement.The idea can be either below :1) The spill agent runs on multiple threads2) Multiple spill agents serve for one spill queue
Qrep is used to replicate data from z to distributed environment, ICBC found the Qrep apply log keep to increase and cause the difficult in operation management, so they request Qrep to enable the log split function on the apply site. they expect ...
Q Replication to allow add/remove member in P2P replication mesh
As we are migrating our DB workload to the cloud we need to have the ability to add/remove members to redefine our P2P multi-master QReplication topology to accommodate for workload growth and making data available closer to customers (application...
In a customer that has installed Q Replication, I've been working in deploy ASNMON task on z/OS side as replacement of IBM Infosphere Data Replication Dashboard tool that was deprecated. The ASN.IBMSNAP_CONDITIONS tables is used to configure the a...
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