Steady-state epic systems oracle fusion integration architecture — Epic Interconnect ↔ Oracle Integration Cloud ↔ Fusion. HL7 v2 events, FHIR R4 resource APIs, batch FBDI Journal posting, real-time + batch hybrid. Audit-logged at every hop.
After cutover, Epic remains the clinical + revenue-cycle system of record and Fusion is the back-office system of record. Integration is the connective tissue.
Once the migration to Oracle Fusion is complete and the legacy ERP is read-only-archived, epic systems oracle fusion integration becomes the steady-state architecture. Epic continues running EpicCare for clinical workflow, Chronicles holding the operational record, Resolute generating the AR sub-ledger, Willow tracking pharmacy, OpTime surgical, Beaker lab. Fusion runs the GL, AP, Procurement, Inventory, Cost Accounting, HCM and SCM. Between them is a managed integration architecture that runs every day, every shift, every patient.
The architecture is Epic → Interconnect → OIC → Fusion (and back where required). Interconnect is the Epic-side gateway exposing HL7 v2 endpoints, FHIR R4 resource APIs and Epic web services. OIC is the Fusion-side gateway, transforming message shapes, retrying transient failures, dead-lettering persistent failures, emitting audit logs and reconciliation hooks. Every flow has explicit retry, dead-letter and reconciliation behaviour — operational integration in a healthcare context cannot lose a transaction silently.
Real-time and batch coexist. Real-time flows: ADT, ORM, ORU, MFN, BAR via HL7 v2; Practitioner, Patient, Encounter, Medication, Observation via FHIR R4. Latency seconds to minutes. Batch flows: Resolute downstream journal posting daily, inventory transaction nightly catch-up, worker master refresh. Latency hours to overnight. Most operational flows are real-time; most reconciliation flows are batch. The split is engineered per flow during the integration design phase, not retrofitted.
Real-time event-driven, batch posting, FHIR R4 resource API, HL7 v2 message — patterns engineered per business flow.
Operational events via Interconnect HL7 v2 endpoints: ADT, ORM, ORU, MFN, BAR. Routed through OIC, transformed, posted to Fusion via REST. Sub-minute latency.
Modern resource-based reads: Practitioner, Patient, Encounter, Medication, Observation. OAuth 2.0 + Epic App Orchard credentials. ONC-interoperability-rule compliant.
Resolute HB/PB downstream daily journal feed. Picked up by OIC, COA-transformed, FBDI Journal Import to Fusion GL. Three-tier reconciliation post-load.
Willow formulary, OpTime preference card, Beaker reagent supplier master updates emit MFN messages, OIC transforms to Fusion Item Master REST API.
Fusion Worker hire/term events propagate to Epic CLARITY_EMP via OIC + Interconnect. Conflict resolution rule: Fusion wins on HR attrs, Epic wins on clinical attrs.
Every integration flow emits reconciliation rows captured by the daily reconciliation harness. Variance beyond tolerance triggers operations triage.
A six-stage build for steady-state integration. Typically runs in parallel with the bulk migration build, activates at cutover.
Every Epic-side steady-state interface inventoried: Interconnect endpoints, current HL7 v2 channels, current FHIR R4 resource subscriptions. Every Fusion-side target inventoried.
Each integration flow assigned a pattern: real-time HL7 v2, FHIR R4 resource, daily batch FBDI, bidirectional Worker ↔ EMP, MFN master file. Conflict resolution rules for bidirectional flows.
Each flow built as an OIC integration with explicit retry (typically 3 attempts with exponential backoff), dead-letter (persistent storage of failed messages for operations review), audit log, reconciliation hook.
Epic technical team configures Interconnect endpoints (HL7 v2 channels, FHIR R4 subscriptions, MFN feeds). OAuth 2.0 + App Orchard credentials provisioned for FHIR. IPsec VPN + mutual TLS for HL7 v2.
Full end-to-end drill in non-prod: Resolute downstream feed → Fusion GL, Willow → Fusion Inventory, OpTime → Fusion Materials, Beaker → Fusion. Reconciliation runs against synthetic data.
At cutover blackout, integration flows activate. Epic-side endpoints updated, OIC integrations enabled, first real-traffic flows monitored. Delta replay completes within 4–6 hours.
Six reasons Oracle Integration Cloud + Epic Interconnect outperforms direct-database, custom-middleware or vendor-broker patterns.
Interconnect is Epic's published interface surface. Chronicles MUMPS is never touched. Epic warranty and support model preserved.
Every OIC integration has explicit retry and dead-letter behaviour. Transient failures auto-resolve; persistent failures land in operations queue.
OIC emits audit log per flow execution. HIPAA §164.312(b) audit control standard satisfied. Privacy officer retrieves directly.
Flows assigned the right pattern per business need. Operational events real-time, reconciliation flows batch. Not one-size-fits-all.
HL7 v2 + FHIR R4 + REST + SFTP — every protocol healthcare integration teams already know. No bespoke vendor protocol.
Epic quarterly release upgrades and Fusion 26x release upgrades handled as part of managed service. OIC integration templates pre-updated.
Epic systems oracle fusion integration is the steady-state, post-migration connection between Epic (clinical + revenue cycle, system of record) and Oracle Fusion (finance, HCM, SCM, system of record for back-office). The integration runs through Oracle Integration Cloud (OIC), with Epic Interconnect serving the Epic-side endpoint, using HL7 v2 messages for transactional events, FHIR R4 APIs for resource-based reads, and batch SFTP/Parquet for high-volume reconciliation. Steady-state flows: Resolute HB/PB downstream journals → Fusion GL; Willow pharmacy dispenses → Fusion Inventory; OpTime case-cart materials → Fusion Materials; Beaker reagent consumption → Fusion Inventory; Fusion supplier master → Resolute supplier reference. Bidirectional where required, audit-logged at every hop.
Real-time integration uses HL7 v2 events emitted by Epic Interconnect (ADT, ORM, ORU, MFN, BAR) or FHIR R4 resource notifications, routed through OIC, transformed and posted to Fusion via REST APIs. Latency: seconds to minutes. Typical real-time flows: ADT events feed Fusion Worker provider attributes (patient-doctor relationship change), Willow MFN messages feed Fusion Inventory item master updates. Batch integration uses Clarity-extracted Parquet files (or SFTP CSV) loaded into Fusion via FBDI. Latency: hours to overnight. Typical batch flows: Resolute downstream daily journal posting batch (overnight); inventory transaction history daily catch-up; worker master nightly refresh. Most epic systems oracle fusion integration architectures are hybrid — real-time for the operational, batch for the reconciliation.
Yes. Epic Interconnect is the Epic-side gateway: it exposes HL7 v2 endpoints, FHIR R4 resource APIs, and Epic web services to external systems. OIC is the Fusion-side gateway: it routes integration flows, transforms message shapes between Epic and Fusion schemas, retries on transient failures, dead-letters persistent failures, and emits audit logs. The integration architecture is Epic → Interconnect → OIC → Fusion. Authentication uses OAuth 2.0 + Epic's app orchard credentials for FHIR R4, and IPsec VPN + mutual TLS for HL7 v2 channel-level security. Configuration stays inside Epic's published interface surface — no direct database calls, no MUMPS access, no Chronicles touch.
Both, for different use cases. HL7 v2 is the historical transactional message format used widely in healthcare integration. Epic Interconnect emits HL7 v2 for most clinical and operational events: ADT (admission/discharge/transfer), ORM (order management), ORU (results), MFN (master file notification, used for item master updates), BAR (billing add/charge). For epic systems oracle fusion integration of Willow/OpTime/Beaker inventory feeds, HL7 v2 MFN and BAR messages are typical. FHIR R4 is the modern resource-based API standard required by ONC interoperability rules. Epic publishes FHIR R4 endpoints for patient demographics, encounters, conditions, medications, observations, practitioners. For epic systems oracle fusion integration of worker provider master updates, FHIR R4 Practitioner resource is typical.
Resolute HB/PB downstream journal feed is the most important steady-state integration in any Epic to Fusion architecture. Resolute posts AR sub-ledger journals on a configurable cadence (typically daily batch with intra-day micro-batches for high-volume hospitals). The journal feed is published from Resolute through Interconnect (typically via a flat-file or web-service endpoint that the Resolute admin team owns), picked up by OIC, transformed against the COA crosswalk (locked at mapping phase), and posted to Fusion GL via FBDI Journal Import for daily volume or REST API for low-volume real-time. Every batch is reconciled at three tiers post-load. Resolute remains the system of record for AR aging; Fusion holds the consolidated GL balance.
Willow pharmacy: dispense events emit HL7 v2 BAR messages from Interconnect to OIC, OIC transforms to Fusion Inventory transaction format and posts via REST. Formulary master updates emit HL7 v2 MFN to OIC, transformed to Fusion Item Master REST API. 340B-flagged dispenses carry the 340B flag through to Fusion. OpTime surgical: case-cart material consumption emitted from OR_LOG completion via Interconnect, OIC transforms to Fusion Materials Management, preference card updates emit MFN. Beaker laboratory: reagent consumption per ORDER_PROC completion emits to OIC, transformed to Fusion Inventory transaction, supplier master updates emit MFN to Fusion Procurement. Each flow runs through OIC with retry, dead-letter and reconciliation.
Epic publishes quarterly releases (E1, E2, E3, E4 per year roughly) with backwards-compatible interface surfaces for HL7 v2 and FHIR R4 endpoints — that's deliberate, Epic doesn't break integration partners. Across Epic version upgrades the Interconnect surface stays stable; new resources or message types are additive. The epic systems oracle fusion integration architecture is therefore resilient to Epic upgrades — your OIC integration flows don't need to be rebuilt at each Epic release. Syntra ETL tracks Epic's quarterly cadence and pre-publishes any necessary OIC integration template updates. Same applies to Fusion's 26x release cadence on the Fusion side. Both maintenance streams are part of the steady-state managed service.
Yes, where the business case requires. Most flows are Epic → Fusion (the dominant pattern, because Epic is the operational system of record and Fusion is the back-office system of record). Some are bidirectional: Fusion Worker master ↔ Epic CLARITY_EMP/CLARITY_SER for hire/term events; Fusion Supplier master → Epic Willow/Beaker supplier reference for procurement integration; Fusion AP payment status → Resolute for matching against patient refunds. Bidirectional flows are designed with explicit conflict resolution rules (which system wins on collision — usually Epic for clinical/patient-facing attributes, Fusion for back-office attributes). The OIC integration architecture supports bidirectional flow with the same retry, dead-letter and audit-log discipline as unidirectional.
Book a 30-minute integration architecture workshop. We'll walk through your steady-state Resolute → Fusion GL feed, Willow/OpTime/Beaker → Fusion Inventory flows, bidirectional Worker patterns, and OIC + Interconnect design. Concrete architecture before the call ends.