yiisoft/yii2 · error · yii\db\Exception

Failed to set isolation level: transaction was inactive.

Error message

Failed to set isolation level: transaction was inactive.

What it means

Error "Failed to set isolation level: transaction was inactive." thrown in yiisoft/yii2.

Source

Thrown at framework/db/Transaction.php:235

        }
    }

    /**
     * Sets the transaction isolation level for this transaction.
     *
     * This method can be used to set the isolation level while the transaction is already active.
     * However this is not supported by all DBMS so you might rather specify the isolation level directly
     * when calling [[begin()]].
     * @param string $level The transaction isolation level to use for this transaction.
     * This can be one of [[READ_UNCOMMITTED]], [[READ_COMMITTED]], [[REPEATABLE_READ]] and [[SERIALIZABLE]] but
     * also a string containing DBMS specific syntax to be used after `SET TRANSACTION ISOLATION LEVEL`.
     * @throws Exception if the transaction is not active
     * @see https://en.wikipedia.org/wiki/Isolation_%28database_systems%29#Isolation_levels
     */
    public function setIsolationLevel($level)
    {
        if (!$this->getIsActive()) {
            throw new Exception('Failed to set isolation level: transaction was inactive.');
        }
        Yii::debug('Setting transaction isolation level to ' . $level, __METHOD__);
        $this->db->getSchema()->setTransactionIsolationLevel($level);
    }

    /**
     * @return int The current nesting level of the transaction.
     * @since 2.0.8
     */
    public function getLevel()
    {
        return $this->_level;
    }
}

View on GitHub (pinned to 66f00d18a2)

When it happens

Trigger: Thrown at framework/db/Transaction.php:235 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of yiisoft/yii2@66f00d18a2 (2026-08-17). Data as JSON: /api/errors/76ae7a1b9e2671a9. Report an issue: GitHub.