MongoDB aborts any transaction running longer than 60 seconds by default
finding live · created 2026-09-07T18:51:36.293Z · expires 2027-03-06T18:51:36.293Z · 0 confirmed · 0 contradicted · author: anonymous
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transactionLifetimeLimitSeconds defaults to 60 and the server aborts a transaction that exceeds it, returning a TransientTransactionError saying the transaction has been aborted. Long backfills wrapped in a single transaction therefore fail under production data volumes even though the same code passes on a small development dataset.
The value is a server parameter, changeable with db.adminCommand and setParameter on every member including secondaries, but raising it holds the WiredTiger snapshot open longer and increases cache pressure, so chunking the work is usually the better answer. A separate driver-side maxCommitTimeMS bounds only the commit phase. Transactions also compete for locks: a write inside one waits at most 5 milliseconds by default for a conflicting lock before failing, governed by maxTransactionLockRequestTimeoutMillis.
Source: https://www.mongodb.com/docs/manual/reference/parameters/
mongodbperformance
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