SeaQL/sea-orm · error

There is no open transaction to commit

Error message

There is no open transaction to commit

What it means

The mock database's transaction driver panics when `commit` is invoked while `self.transaction` is `None`, i.e. no `begin()` has opened a transaction (or it was already committed/rolled back). The mock simulates SQL transaction semantics strictly, so a commit without a matching begin is treated as a protocol violation.

Source

Thrown at src/database/mock.rs:196

    #[instrument(level = "trace")]
    fn begin(&mut self) {
        match self.transaction.as_mut() {
            Some(transaction) => transaction.begin_nested(self.db_backend),
            None => self.transaction = Some(OpenTransaction::init()),
        }
    }

    #[instrument(level = "trace")]
    fn commit(&mut self) {
        match self.transaction.as_mut() {
            Some(transaction) => {
                if transaction.commit(self.db_backend) {
                    if let Some(transaction) = self.transaction.take() {
                        self.transaction_log.push(transaction.into_transaction());
                    }
                }
            }
            None => panic!("There is no open transaction to commit"),
        }
    }

    #[instrument(level = "trace")]
    fn rollback(&mut self) {
        match self.transaction.as_mut() {
            Some(transaction) => {
                if transaction.rollback(self.db_backend) {
                    if let Some(transaction) = self.transaction.take() {
                        self.transaction_log.push(transaction.into_transaction());
                    }
                }
            }
            None => panic!("There is no open transaction to rollback"),
        }
    }

    fn drain_transaction_log(&mut self) -> Vec<Transaction> {

View on GitHub (pinned to e29bcd1b41)

Solutions

1. Ensure every `COMMIT` is preceded by a matching `BEGIN` on the same connection in the test script.
2. Remove duplicate commit calls; commit exactly once per open transaction.
3. Check the code under test for early returns that skip `begin` but still reach `commit`.
4. Use `rollback` in the None arm or restructure the test so cleanup is idempotent.

Example fix

// before (mock test script)
use(stmt), commit(stmt) // panics: no open transaction

// after
begin(stmt), use(stmt), commit(stmt)

// mock test script: assert pairing before finalizing
assert_eq!(script.iter().filter(|s| s.is_begin()).count(),
           script.iter().filter(|s| s.is_commit()).count(),
           "unbalanced BEGIN/COMMIT");

fn has_open_transaction(mock: &MockDatabase) -> bool {
    mock.transaction_depth() > 0 // or track begin/commit counts in the harness
}

std::panic::catch_unwind(|| mock.commit()) // prefer fixing the script over catching

When it happens

Trigger: Executing `COMMIT` on a `MockDatabase` / `MockTransaction` where `begin` was never issued, or issuing two `commit`s for one `begin`.

Common situations: Unit tests that issue COMMIT directly without BEGIN; a test helper replaying statements in the wrong order; code under test whose begin path was skipped by an early return, leaving a stray commit; double-commit in cleanup logic.

Understand the failure class

Background: "Invalid state transition" errors: "status must be X, actually Y", "already rejected/charging/uninstalled", "cannot ... while running" — what they mean when a library rejects your call — this error's family across 31 libraries.

Related errors

• There is no open transaction to commit
• There is no open transaction to rollback
• There is no open transaction to rollback
• Failed to acquire mocker
• Not mock connection

AI-assisted analysis of SeaQL/sea-orm@e29bcd1b41 (2026-09-10). Data as JSON: /api/errors/201cae0fb2a68ad0. Report an issue: GitHub.