DataAccessResourceFailureException: connection pool exhausted acquiring connection for payment <uuid>
com.example.payments.LedgerRepository#record
Table view
| Bucket (UTC) | Events |
|---|---|
| 2026-08-22 16:00:00 | 0 |
| 2026-08-22 17:00:00 | 0 |
| 2026-08-22 18:00:00 | 0 |
| 2026-08-22 19:00:00 | 0 |
| 2026-08-22 20:00:00 | 0 |
| 2026-08-22 21:00:00 | 0 |
| 2026-08-22 22:00:00 | 0 |
| 2026-08-22 23:00:00 | 0 |
| 2026-08-23 00:00:00 | 0 |
| 2026-08-23 01:00:00 | 0 |
| 2026-08-23 02:00:00 | 0 |
| 2026-08-23 03:00:00 | 0 |
| 2026-08-23 04:00:00 | 0 |
| 2026-08-23 05:00:00 | 0 |
| 2026-08-23 06:00:00 | 0 |
| 2026-08-23 07:00:00 | 0 |
| 2026-08-23 08:00:00 | 0 |
| 2026-08-23 09:00:00 | 0 |
| 2026-08-23 10:00:00 | 0 |
| 2026-08-23 11:00:00 | 0 |
| 2026-08-23 12:00:00 | 0 |
| 2026-08-23 13:00:00 | 0 |
| 2026-08-23 14:00:00 | 0 |
| 2026-08-23 15:00:00 | 0 |
How this group was decided
Every step below is a pure function of the event. The same event always produces the same group.
1 · Parse the stack trace
3 frames parsed, 2 belong to the application. Only those decide the group — the same bug reaches the runtime through different framework paths depending on the request.
- in-appcom.example.payments.LedgerRepository.recordLedgerRepository.java:73
- in-appcom.example.payments.PaymentService.settlePaymentService.java:129
- vendororg.springframework.transaction.interceptor.TransactionInterceptor.invokeTransactionInterceptor.java:119
2 · Build the fingerprint input
Line numbers are dropped so that editing a line above the throw site does not open a new group. Values inside the message are replaced with placeholders.
v1 platform=java service=payments-api type=org.springframework.dao.DataAccessResourceFailureException frame=com.example.payments.LedgerRepository#record frame=com.example.payments.PaymentService#settle
3 · Hash it
SHA-256 of the text above, truncated to 128 bits. The version is part of the group key: a future algorithm opens new groups rather than rewriting these.
Fingerprint32355485dd105cda89fd3ed51340fb5dAlgorithm versionv1
Latest stored event
2026-08-12 20:58:37 UTCconnection pool exhausted acquiring connection for payment a8edd8fd-ee50-4be3-adcd-83d50c385cc6
org.springframework.dao.DataAccessResourceFailureException: connection pool exhausted at com.example.payments.LedgerRepository.record(LedgerRepository.java:73) at com.example.payments.PaymentService.settle(PaymentService.java:129) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)
Similar groups
Trigram similarity computed by Postgres against a GIN index. It catches what a fingerprint cannot — the same fault one refactor away from an existing group. No model is involved.
Nothing above the 0.3 similarity threshold.