| Modifier and Type | Class and Description | 
|---|---|
| class  | R2dbcRollbackExceptionException thrown when an attempt to commit a transaction resulted in an unexpected rollback due to deadlock or
 transaction serialization failures. | 
| class  | R2dbcTimeoutExceptionException thrown when the timeout specified by a database operation (query, login) is exceeded. | 
| class  | R2dbcTransientResourceExceptionException thrown when a resource fails temporarily and the operation can be retried. | 
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