Database class method syntax

Question

Based on salesforce documentation, second parameter in dml method is optional and default is false. Like: update(recordsToUpdate, allOrNone) But it seems to be incorrect, whenever i am updating any list and not giving second parameter, while updating if any one record is failed then all records present in the list are getting failed. I have to explicitly give false as second parameter, then only it is updating all other records. Am i the only one who is facing this problem? Thanks

Answer 1

The default is true (all fail if one fails)

This means that if you specify false, a failure will not abort the transaction.

The optional allOrNone parameter specifies whether the operation allows partial success. If you specify false for this parameter and a record fails, the remainder of the DML operation can still succeed. This method returns a result object that can be used to verify which records succeeded, which failed, and why.

Source here