python runtime_error ai_generated true

sqlalchemy.exc.InvalidRequestError: This session is in 'committed' state; no further SQL can be emitted within this transaction.

ID: python/flask-sqlalchemy-session-not-removed

Also available as: JSON · Markdown · 中文
80%Fix Rate
85%Confidence
0Evidence
2025-02-18First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
2.x active — — —
3.x active — — —

Root Cause

Calling db.session.commit() inside a request then continuing to use the session without a new transaction.

generic

中文

在请求中调用db.session.commit()后继续使用该会话，但未开启新事务。

Workarounds

  1. 90% success 
    with db.session.begin():\n    db.session.add(obj)
  2. 93% success 
    def view():\n    db.session.add(x)\n    db.session.commit()\n    return 'ok'

Dead Ends

Common approaches that don't work:

  1. 70% fail

    Rollback discards pending changes and does not re-open a usable transaction for the same objects.

  2. 60% fail

    Keeps attributes but the session is still in committed state for new queries.