Programming-timeĮrrors are raised as a result of functions or methods being called with Programming-time error and the runtime error. SQLAlchemy errors can roughly be separated into two categories, the SQLAlchemy normally raises errors within the context of a SQLAlchemy-specificĮxception class. This section lists descriptions and background for common error messagesĪnd warnings raised or emitted by SQLAlchemy. Previous: Third Party Integration Issues.Please rollback() fully before proceeding This connection is on an inactive transaction.This Compiled object is not bound to any Engine or Connection.A bind was located via legacy bound metadata, but since future=True is set on this Session, this bind is ignored.select() construct created in “legacy” mode keyword arguments, etc.Object is being merged into a Session along the backref cascade.Object cannot be converted to ‘persistent’ state, as this identity map is no longer valid.relationship X will copy column Q to column P, which conflicts with relationship(s): ‘Y’.Instance is already associated with an instance of via its attribute, and is only allowed a single parent.For relationship, delete-orphan cascade is normally configured only on the “one” side of a one-to-many relationship, and not on the “many” side of a many-to-one or many-to-many relationship.This Session’s transaction has been rolled back due to a previous exception during flush.
Object will not produce a cache key, Performance Implications.Can’t reconnect until invalid transaction is rolled back.QueuePool limit of size overflow reached, connection timed out, timeout.
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