Purpose-built ETL platform for SAP ECC to Oracle Fusion migration — FI, CO, MM, SD, PP, HR. Direct-DB, BAPI, IDoc, ABAP CDS, SLT extraction modes. Z-* custom catalogue, cluster-table decompression, FBDI/HDL emitters. 40–60% faster than SI-led programmes.
The 2027 support deadline, the cost of HANA, and the friction of S/4HANA re-implementation are pushing Oracle-leaning customers off SAP ECC and onto Fusion at unprecedented velocity.
SAP ECC mainstream support ends in December 2027. Customers paying the 2% extended-maintenance uplift get to 2030, no further. The default SAP-suggested path is S/4HANA via RISE — but for thousands of ECC customers running on Oracle DB, the destination is the wrong fit. RISE forces re-implementation (data model rewrites for the new universal journal, ABAP custom rewrites, Fiori UI rebuild) at S/4HANA cost while compounding lock-in to the per-user SAP cloud subscription curve. Choosing Oracle Fusion instead consolidates onto a single SaaS suite already proven across finance, HCM, supply chain and CX.
Syntra ETL is the connector layer for this migration. Pre-built ECC extractors with four interchangeable modes (direct-DB on Oracle/HANA/DB2/SQL Server/MaxDB, BAPI/RFC, IDoc, ABAP CDS, plus SLT for replication), governed crosswalks from the BKPF/BSEG/KNA1/LFA1/MARA/EKKO/VBAK universe into Fusion's six-segment COA and TCA model, and FBDI/HDL emitters validated against the current Fusion 26x release. The sap ecc to oracle fusion migration conversation that traditionally consumes the first two quarters of an SI programme happens in week three on the Syntra platform — with hard evidence on the table from a working extraction pilot.
Whether you are migrating ECC FI/CO only, full ECC FI/CO/MM/SD/PP, or the entire ECC + HR + PM/PS footprint, the same engine handles the workflow. With the same reconciliation rigor and the same audit evidence pack that internal audit, external audit and German Wirtschaftsprüfer signs off on directly.
And how the Syntra ETL platform addresses each before it consumes your timeline.
BSEG/RFBLG and other cluster tables are opaque to plain SQL. Syntra ETL extracts via ABAP CDS views, RFC line-item reads, or SLT replication — every cluster row decompressed to a clean tabular form with full Z-* field capture.
Discovery crawls DD02L/DD03L (ABAP Dictionary), BAdI registry, user-exit catalog, custom report library — typically 800–4,000 objects. Classification engine recommends collapse/replace/retire for each. 35–55% retired.
Document header (BKPF) plus line items (BSEG) translated into Fusion GL Journal Headers and Lines via FBDI, preserving doc-type, posting-key, profit-centre and segment context across the COA crosswalk.
German HGB §257 plus AO §147 require 10-year retention of accounting records, including original-document substantiation. SOX requires 7 years with full trace. Syntra ETL preserves the chain so audit evidence survives the platform change.
Every SAP PI/PO Integrated Configuration inventoried, classified and re-implemented on Oracle Integration Cloud or third-party iPaaS — sequenced as a parallel workstream so cutover day has zero integration gaps.
Italian SDI, Brazilian SPED, French Chorus Pro, Polish KSeF, Mexican CFDI — every active country e-invoicing flow inventoried and replaced with Fusion-native equivalents before cutover. Compliance never lapses.
A repeatable, governed workflow built for ECC's particular complexity. Typical full-pillar timeline: 9–14 months.
Discovery engine catalogs every Z-* table, BAdI, user exit, ABAP report, PI/PO Integrated Configuration, Sapscript/Smartform and country e-invoicing flow in the ECC tenant via direct-DB read-only or ABAP CDS. Output: complete customisation inventory, volume profile per table, integration estate, sized assessment with risk register.
Company-code to ledger crosswalks, COA segment design, GL/customer/vendor/material master crosswalks, Z-* collapse/replace/retire decisions, OIC integration design, Fusion organisational structure design. Reviewed and signed off by finance, controllers, supply chain leads and external audit.
ECC extractors pull BKPF/BSEG, KNA1/LFA1/MARA, EKKO/EKPO, VBAK/VBAP, MSEG, ANLA — direct-DB or via ABAP CDS/SLT depending on Basis policy. Output staged as Parquet with hash-signed manifests, partitioned by fiscal year and company code.
Crosswalks applied, cluster-table rows decompressed, Z-* collapsed to DFFs/COA, FBDI GL Journal/AR Invoice/AP Invoice payloads and HDL Worker.dat generated, validated against current Fusion 26x release schema. Row-level diagnostics surface locally before Fusion ESS submission.
FBDI ZIPs submitted to Fusion ESS, monitored to completion, reconciled at row/sum/hash level. In parallel, OTBI dashboards and BI Publisher reports rebuilt against ABAP report inventory. OIC integration flows tested end-to-end against external systems.
1–2 fiscal-month parallel cycles (ECC + Fusion), deltas captured via SLT/CDC and replayed, reconciled to the cent, sign-off pack issued for internal and external audit. ECC moves to read-only archive mode; new postings flow to Fusion only. Basis team released.
No bespoke RFC scaffolding, no custom IDoc parsers, no untested cluster-table SQL. Just configure, extract, reconcile.
Oracle DB, HANA, DB2, SQL Server, MaxDB drivers. Read-only Basis-approved user, parallel partition reads, throttled to off-peak. Fastest path for high-volume historical pulls.
SAP Java Connector (JCo) and .NET Connector calls against standard BAPIs. Used when Basis policy disallows direct-DB. Slower but maximally compatible across ECC EHPs.
Standard IDoc types (FIDCC1, DEBMAS, CREMAS, MATMAS, ORDERS, INVOIC) parsed via IDoc segment dictionary. Useful for incremental delta capture during parallel-run.
Pre-built CDS views deployed via transport into the ECC system, queried via the SAP HANA SQL or OData layer. Clean decompressed semantic-model output.
SAP Landscape Transformation slave attached for continuous replication during parallel-run. Cluster-table decompression handled at source, delta capture is real-time.
ABAP Dictionary (DD02L/DD03L) crawl, BAdI registry, user-exit catalog, custom report inventory, Sapscript/Smartform list, PI/PO ICO export — feeds the discovery-classification-rebuild loop.
A typical SAP ECC to Oracle Fusion migration covering FI, CO, MM and SD modules with 10+ years of transactional history and several thousand Z-* custom objects runs 9–14 months with Syntra ETL versus 18–30 months on consultant-led SI programmes. Smaller single-pillar scopes (ECC FI/CO → Fusion Financials only) close in 5–8 months. The acceleration comes from pre-built ECC extractors that already speak BAPI, IDoc, ABAP CDS and direct-DB modes, governed crosswalks from BKPF/BSEG/KNA1/LFA1/MARA into Fusion's six-segment COA and TCA model, and FBDI/HDL emitters that target the current Fusion 26x release. The pressure of the SAP ECC mainstream-support cliff in December 2027 typically compresses scope decisions and accelerates timelines further.
SAP ECC mainstream support ends December 2027, extended to 2030 only at a 2% maintenance uplift, and the obvious SAP path is S/4HANA + RISE — but for many customers it is the wrong path. S/4HANA forces a re-implementation regardless (data model rewrites, ABAP custom rewrites, Fiori UI rebuild, HANA licence), so the migration cost is comparable while the destination locks you deeper into SAP's per-user RISE pricing. Choosing Oracle Fusion instead consolidates onto a single SaaS ERP/HCM/SCM stack, eliminates HANA licence exposure, frees the SAP Basis team, and unlocks Oracle's embedded AI agents and analytics. SAP ECC to Oracle Fusion migration is increasingly the default for Oracle-DB ECC shops, M&A consolidations where the parent runs Oracle Fusion, and CFOs unwilling to underwrite the RISE subscription pricing curve.
Syntra ETL supports the full ECC footprint. FI (Finance): BKPF/BSEG GL, KNA1/KNB1/KNVV customer master, LFA1/LFB1 vendor master, BSAD/BSID/BSAK/BSIK open items, fixed assets ANLA/ANLC. CO (Controlling): cost centers CSKS, internal orders AUFK, profit centers CEPC, COPA tables. MM (Materials): MARA/MARC/MARD material master, EKKO/EKPO purchase documents, MSEG inventory movements, MKPF document headers. SD (Sales/Distribution): VBAK/VBAP sales orders, VBRK/VBRP billing, VBAP schedule lines, customer pricing. PP, QM, PM, PS modules covered for analytical archive even when Fusion replaces only finance and supply chain. HR/HCM: HRP1000/PA0000-series infotypes routed to HCM Data Loader (HDL).
Z-* tables (custom tables created in the customer namespace), BAdIs, user exits and custom ABAP reports are the single largest variable in any SAP ECC to Oracle Fusion migration. Syntra ETL's discovery engine crawls the ABAP Dictionary (DD02L/DD03L), the BAdI registry, the user-exit catalog and the custom report repository — typically inventorying 800–4,000 custom objects in a mature ECC tenant. Each is classified: required Z-* tables collapse into Fusion DFFs or COA segments, optional ones route to extension fields, analytical-only ones land in the long-term ECC archive. ABAP reports are inventoried and replaced with OTBI/BI Publisher equivalents. Customers commonly find 35–55% of the Z-* and ABAP custom estate is redundant under Fusion's native capability and can be retired during cutover.
It matters a lot for extraction strategy. SAP ECC on Oracle DB (still common — Oracle was the original ECC database before HANA) gives Syntra ETL the option of direct-DB extraction through read-only Oracle SQL against cluster tables (BSEG via BSEG_TGT, etc.), which is dramatically faster than BAPI or IDoc for high-volume historical pulls. ECC on HANA, DB2, SQL Server or MaxDB also supports direct-DB but with the appropriate driver. For sensitive or live tenants where direct-DB is disallowed by Basis policy, Syntra ETL falls back to BAPI/RFC, IDoc, ABAP CDS views, or SLT (SAP Landscape Transformation) replication. The platform supports all four modes interchangeably so extraction strategy is a policy choice, not a tool limitation.
SAP cluster tables (BSEG/RFBLG, BSET, etc.) and pool tables compress multiple logical rows into binary cluster records on the database — opaque to plain SQL. Syntra ETL's ECC extractor uses the proper SAP-native decompression: ABAP CDS views (preferred in newer ECC EHPs), the SAP RFC interface to read decompressed line items, or SLT replication that handles cluster decompression at the source. The result is a clean tabular dataset (one row per BSEG line item) ready for crosswalk into Fusion GL Journal Lines via FBDI. Custom Z-* fields appended to BSEG by ECC customisation are also captured and routed appropriately. No data is lost in the decompression — every cluster row is preserved with full traceability back to the source document header (BKPF).
Many SAP ECC tenants integrate to dozens of downstream systems via SAP Process Integration (PI/PO, formerly XI) — bank statements, EDI partners, tax engines, e-invoicing platforms, warehouse management systems, plus internal NetWeaver business workflows. Migrating ECC to Fusion means every PI/PO interface needs an equivalent on the Fusion side. Syntra ETL's discovery engine inventories every active PI/PO Integrated Configuration (ICO), classifies by business criticality, and proposes a Fusion-equivalent: OIC (Oracle Integration Cloud) flow, REST API consumer, or third-party iPaaS. The decommissioning of PI/PO is a parallel workstream that runs alongside the ECC data migration so that on cutover day every integration has a destination.
No. Syntra ETL's ECC extractors run as read-only via the Basis-approved extraction mode (direct-DB read-only user, RFC user with display-only authorisations, or SLT replication slave). No changes are required to the ECC instance, no Basis downtime is needed, and the production workload continues uninterrupted. Heavy bulk extracts (e.g. ten years of BSEG line items, MSEG goods movements, VBRP billing) are scheduled to off-peak windows and throttled to avoid impacting live ECC performance. The cutover itself is a defined event — ECC switched to read-only, new postings flow to Fusion — typically aligned with the fiscal month-end close to keep the audit trail clean.
Book a 30-minute discovery call. We'll walk through your ECC modules, Z-* custom estate, PI/PO integrations, country e-invoicing flows and database platform — and give you a concrete timeline and budget before the call ends.