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spring-boot-demo/multi-datasource/output/09-chained-transaction-manager.txt
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Claude e59ff029a1 Add multi-datasource module: two databases with per-database DataSource, Flyway, EntityManagerFactory and transaction manager on Boot 4.1
Working setup plus one small application per way of getting it wrong (no @Primary, @Primary only, url vs jdbc-url, wrong repository package, Flyway auto-configuration), plain vs named @Transactional, and ChainedTransactionManager with a failing commit. Transcripts are written by the tests.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Uu7q8vPeREyT4218EJPzz1
2026-09-24 09:38:27 +00:00

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# ChainedTransactionManager over the customers and orders managers
--- 1. business exception after both writes: both roll back ---
rows: customers.customer=0 orders.purchase_order=0
--- 2. the orders database refuses to commit; orders is LAST in the list ---
thrown: org.springframework.transaction.HeuristicCompletionException (outcome: rolled back)
rows: customers.customer=0 orders.purchase_order=0
--- 3. the orders database refuses to commit; orders is FIRST in the list ---
thrown: org.springframework.transaction.HeuristicCompletionException (outcome: mixed)
rows: customers.customer=1 orders.purchase_order=0