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IBM Data and AI Ideas Portal for Customers


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Q Replication for Z

Showing 56

Alternative of Updating All or Changed Fields for SQL Update

When replication of SQL Update, only changed fields are updated now. The data consistency cannot be guaranteed if any changes are happened during the period of no replication is executed. All fields updating is required for SQL Update data replica...
over 6 years ago in Replication: Q-Replication & Availability / Q Replication for Z 1 Planned for future release

Automate restart of IIDR tasks when RRS terminates

We had issues with RRS recently which were solved via a maintenance cycle. During those issues, our IIDR Capture and Apply tasks failed and required manual restart. We have the option TERM=N enabled yet the Capture/Apply tasks were not restarted w...
over 6 years ago in Replication: Q-Replication & Availability / Q Replication for Z 0 Is a defect

Leverage "FOR EACH ROW ON UPDATE" functionality to maintain Peer to Peer Version Columns, instead of triggers

Current implementation of Peer to Peer Version Columns (IBMQREPVERTIME and IBMQREPVERNODE) depend on BEFORE INSERT and BEFORE UPDATE triggers to maintain transaction information for conflict_action of V (last transaction wins). The use of these tr...
over 6 years ago in Replication: Q-Replication & Availability / Q Replication for Z 0 Not under consideration

ALTER table DATA CAPTURE NONE not detected by IIDR QREP or CDC

If 'ALTER table DATA CAPTURE NONE' is executed against a table that is actively replicating, any changes made to the source data will not be captured or replicated until ‘ALTER table DATA CAPTURE CHANGES' is executed. This would cause the target...
almost 7 years ago in Replication: Q-Replication & Availability / Q Replication for Z 0 Planned for future release

QREP DDL replication, add UNICODE factor for column length

When replicating from non-unicode to unicode, the legth of char/varchar target columns needs to be extended. Example: create all CHAR/VARCHAR columns at the target with source_length*2 and implemented an additional life belt with OKSQLSTATES = 220...
almost 7 years ago in Replication: Q-Replication & Availability / Q Replication for Z 0 Planned for future release

zIIP Eligible Q-APPLY

QREP is increasingly become to a key infrastructure component for customers z Systems platform resilience. However, the QREP did need quite a lot MIPS to support. This requirement is for QREP to change some part to be zIIP eligible, specifically f...
almost 7 years ago in Replication: Q-Replication & Availability / Q Replication for Z 0 Not under consideration

Enhance QREP peer-to-peer configuration

Currently most of the customer implementation of QREP is using 'unidirectional replication configuration' even the customer has need of bi-directional replication requirements. Normally applications occur on the source site only, the target tables...
almost 7 years ago in Replication: Q-Replication & Availability / Q Replication for Z 0 Not under consideration

Q Apply issue a warning after exception due to OKSQLSTATES

Using OKSQLSTATES certain error conditions can be specified which will let Q Apply document a failing operation in IBMQREP_EXCEPTIONS.Today, Q Apply does not write out a warning into the log file if an exception based on OKSQLSTATES happened.Monit...
about 7 years ago in Replication: Q-Replication & Availability / Q Replication for Z 1 Planned for future release

Improving the performace of INITIAL LOAD

ABC(Agriculture Bank of China) have implemented A-A based on QREP. Due to its huge number of data volume, the maintenance related to A-A is extreme complex. The more easy operation of QREP the more maintenance convenience.The function of QREP init...
about 7 years ago in Replication: Q-Replication & Availability / Q Replication for Z 0 Not under consideration

Improving QREP online operation

ABC(Agriculture Bank of China) have implemented A-A based on QREP. Due to its huge number of data volume, the maintenance related to A-A is extreme complex. The more easy operation of QREP the more maintenance convenience.1. In some case, certain ...
about 7 years ago in Replication: Q-Replication & Availability / Q Replication for Z 0 Not under consideration