SAP HANA to Oracle
real-time replication
TwinCommit replicates SAP HANA to Oracle Database in real time by reading the SAP HANA transaction log and applying every committed change exactly once and in commit order. Use it to migrate or continuously mirror SAP HANA into Oracle with zero downtime, with no triggers or capture tables on the source.
SAP HANA
log reader
commit-ordered · exactly-once
Oracle
native writer
How capture works on SAP HANA
TwinCommit reads the SAP HANA redo log through a log-reader technical user and decodes row and column-store changes, with no triggers or shadow tables in your SAP schema.
Prerequisites
- ✓log_mode = normal
- ✓Technical user with LOG ADMIN and CATALOG READ
- ✓Primary keys on replicated tables
How apply works on Oracle
Array-bound MERGE statements committed together with the TwinCommit checkpoint table in one transaction.
Requirements
- ✓ARCHIVELOG mode
- ✓Minimal plus primary-key supplemental logging
- ✓Read access to V$ views and the archive destination
Setup
Set up SAP HANA → Oracle in four steps
- 1
Prepare SAP HANA
Run twincommit check. It verifies log_mode = normal and the other prerequisites, and prints the exact fix for anything missing.
- 2
Point at Oracle
Add a target block for Oracle. TwinCommit can generate target DDL with twincommit ddl -apply.
- 3
Snapshot
twincommit snapshot copies each table under a brief share lock and records the exact log position.
- 4
Stream
twincommit run streams every committed change from that position, exactly once and in commit order.
source:
type: saphana
host: hana.internal:30015
user: ${HANA_USER}
password: ${HANA_PASSWORD}
target:
type: oracle
dsn: ${ORACLE_TARGET_DSN}
schema: REPLICA
tables:
- source: SALES.ORDERS
- source: SALES.ORDER_LINES
exclude_columns: [INTERNAL_NOTES]SAP HANA to Oracle replication FAQ
How does TwinCommit replicate SAP HANA to Oracle?
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TwinCommit reads changes from the SAP HANA transaction log, buffers them per transaction, and applies each committed transaction to Oracle in commit order. Array-bound MERGE statements committed together with the TwinCommit checkpoint table in one transaction.
Does SAP HANA to Oracle replication need triggers or capture tables?
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No. TwinCommit reads the SAP HANA log directly and creates no objects in the source database.
Is SAP HANA to Oracle replication exactly-once?
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Yes. TwinCommit commits its checkpoint in the same Oracle transaction as the data, so a crash or restart never loses or duplicates a transaction.
What SAP HANA versions are supported?
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SAP HANA 2.0 SPS05+ · SAP HANA Cloud · S/4HANA and BW/4HANA schemas.
Stream SAP HANA to Oracle today.
Download the free Developer edition, or have one of our replication engineers walk you through a migration plan.