CDC recovery center

Mainframe CDC Monitoring, Recovery, and Validation Resource Center 

Your CDC pipeline doesn't have to fail to create risk. Delays, gaps, latency issues, and small replication problems can quietly undermine data quality, operational processes, and trust in the data used for analytics and AI long before a failure occurs. This resource center provides practical guidance across the full CDC recovery lifecycle, from identifying early warning signs and addressing emerging issues to preparing for recovery and building the business case for improvement.
 
 
 
 
 


 

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Where are you in the CDC recovery journey?

 

CDC Recovery Journey

Find the guidance you need

01 MONITOR

Your CDC pipeline isn't down. Are you sure it's healthy?

A running CDC pipeline can still be headed toward failure. Learn how to identify growing lag, stalled processing, stale-data exposure, and changing recovery conditions before a small issue turns into a missed SLA, outage, major recovery event, or business disruption.

KEY QUESTIONS AT THIS STAGE

  • Is replication running, and is it actually keeping up?
Insight

Ihre CDC-Pipeline ist nicht ausgefallen. Sind Sie sicher, dass sie einwandfrei funktioniert?

Eine laufende CDC-Pipeline kann dennoch auf ein Erholungsproblem zusteuern.

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02 ASSESS

Before you restart, do you know what the failure affected?

Before you restart, understand exactly what the failure affected. Define the incident window, identify affected data and downstream consumers, quantify the gap, and determine the most effective recovery approach.

KEY QUESTIONS AT THIS STAGE

  • Do you have enough information to choose the right recovery path?
Insight

Bevor Sie neu starten, wissen Sie, welche Auswirkungen der Fehler hatte?

Bevor Sie entscheiden, wie es weitergeht, sollten Sie die Datenlücke, die Gefährdung nachgelagerter Bereiche und die Einschränkungen bei der Wiederherstellung bewerten.

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03 RECOVER

The most dangerous CDC recovery mistakes often happen after the initial failure.

Before restarting replication, answer seven critical questions about pipeline state, source history, catch-up requirements, recovery options, and downstream impact to validate your recovery approach and avoid turning a manageable failure into a major recovery event.

KEY QUESTIONS AT THIS STAGE

  • How do we know we're choosing the right recovery approach?
Insight

Der gefährlichste Fehler der CDC bei der Wiederherstellung des Gesundheitszustands passiert nach dem Scheitern.

Bevor Sie den Neustart durchführen, beantworten Sie sieben Fragen, die darüber entscheiden, ob die Wiederherstellung gelingt oder ein größeres Problem verursacht.

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04 VALIDATE

The pipeline is running again. Can you trust the data?

Recovery isn't complete just because replication is running again. Learn how to investigate discrepancies, validate recovery results, and verify that recovered data is complete, current, and trustworthy before declaring the incident resolved.

KEY QUESTIONS AT THIS STAGE

  • What evidence supports the all-clear decision?
Insight

Die Pipeline läuft wieder. Kann man den Daten trauen?

Der Rückstand scheint sich aufzulösen. Das Dashboard zeigt positive Werte an. Datensätze werden wieder verarbeitet. Das Brückengespräch neigt sich dem Ende zu. Doch eine Frage bleibt unbeantwortet: Können wir dem Zielsystem vertrauen?

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05 IMPROVE

When does a CDC recovery problem become a platform problem?

Recovery shouldn't feel like a one-off project every time. Learn how to recognize when recurring recovery delays, manual effort, and reliance on specialists point to a broader platform issue.

KEY QUESTIONS AT THIS STAGE

  • Is this an incident or a pattern?
Insight

Wann wird ein Problem bei der CDC-Wiederherstellung zu einem Plattformproblem?

Jedes Replikationsteam erlebt Unterbrechungen. Die eigentliche Frage ist, wie viel Aufwand, Unsicherheit und Risiko im Anschluss folgen.

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06 EVALUATE

How do you know a CDC vendor's recovery claims will hold up?

Recovery capabilities are easy to promise and hard to prove. Learn which recovery scenarios vendors should demonstrate, and how to structure a proof of concept that validates recovery performance under real-world failure conditions.

KEY QUESTIONS AT THIS STAGE

  • Has the vendor demonstrated their platform can recover from real-world failures?
Insight

Woran erkennt man, dass die Erstattungsansprüche eines CDC-Anbieters Bestand haben?

Testen Sie Neustartstatus, Aufholfunktionen, Validierung, Wiedergabeverhalten, Diagnosefunktionen und Wiederherstellungsgrenzen, bevor Sie sich für eine CDC-Plattform entscheiden.

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Worksheet

Worksheet CDC Recovery POC Evaluation Worksheet 

Use evidence, limitations, and configuration dependencies to support the decision.

/sites/default/files/media/documents/cdc-recovery-poc-evaluation-worksheet.xlsx

07 JUSTIFY

Recovery risks are obvious during an incident and hard to explain afterward.

Learn how to translate recovery issues into operational risk, business impact, measurable cost, and investment outcomes management can evaluate.

KEY QUESTIONS AT THIS STAGE

  • What is the cost of carrying this risk versus addressing it? 
Insight

Wie man einen Business Case für CDC-Wiederaufbauinvestitionen erstellt

Die Lücken in der Erholung sollten in Geschäftsrisiken, Kosten des Nichtstuns, Alternativen und messbare Investitionsergebnisse übersetzt werden.

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Worksheet

CDC Recovery Business Case Worksheet 

Translate CDC recovery evidence into risk, cost, alternatives, measurable outcomes, and an executive recommendation.

/sites/default/files/media/documents/cdc-recovery-business-case-worksheet.xlsx

Common CDC Recovery Terms

TermDefinition
Replication LagThe elapsed time or processing distance between current source activity and the data reflected at the target.
BacklogAccumulated changes that have not yet been processed or applied.
Retained Source HistoryLogs, journals, archived logs, or other source information that may be required during recovery.
Recovery WindowThe time period affected by a replication interruption that must be analyzed, recovered, or validated.    
Restart StateSaved processing information that helps determine where replication may resume.
Catch-Up The process of closing the gap between source activity and target state.
ResynchronizationA process used to reconcile source and target data when standard catch-up is insufficient.
ValidierungThe process of confirming recovered data is complete, current, and trustworthy before declaring recovery complete.            
Retained Source HistoryLogs, journals, archived logs, or other source information that may be required during recovery.
RBARelative Byte Address, a Db2 for z/OS log-position concept used in recovery investigations.
LRSNLog Record Sequence Number used in Db2 for z/OS data-sharing environments.

About This Resource Center

Content in this CDC Recovery Center is written and reviewed by Rocket Software's Data Replicate & Sync product, engineering, and solution engineering teams.

Rocket Data Replicate & Sync (RDRS) supports enterprise replication across mainframe, distributed, and cloud environments. Evaluate RDRS using the same standards described throughout this resource center

The important question isn’t simply whether replication can restart. It’s whether the operating team can understand what happened, recover confidently, and establish when the resulting data is ready to trust.

Questions you may have

View all CDC recovery guidance