Hi.

Sorry for being so dense but...

The document says

The transaction handle is freed. It and its cursors must not be used again
after this call, except with mdb_cursor_renew().


I am still very confused about reusing transactions.

If I commit or abort a read write transaction I can't reuse the transaction
but I can re use the cursor? In the cursor documentation it says

 Cursors that are only used in read-only transactions may be re-used, to
avoid unnecessary malloc/free overhead.

So this indicates only read only cursors can be reused right?

So can you confirm my understanding? This is what I get from reading the
docs.

A transaction can either be read write or read only.

If a transaction is read only you can commit or abort the transaction and
then re-open it again for further use.

If a transaction is read write then it can't be used again after you commit
or abort the transaction.





On Tue, Nov 22, 2016 at 3:17 PM, Howard Chu <[email protected]> wrote:

> Tim Uckun wrote:
>
>>
>>
>>     No. You can perform multiple write operations in a single transaction.
>>
>>
>> But once the commit has been called the next write operation has to be a
>> newly
>> opened transaction right?  The write transactions can't be re-opened.
>>
>> http://lmdb.tech/doc/group__mdb.html#ga846fbd6f46105617ac9f4d76476f6597
>
>
> --
>   -- Howard Chu
>   CTO, Symas Corp.           http://www.symas.com
>   Director, Highland Sun     http://highlandsun.com/hyc/
>   Chief Architect, OpenLDAP  http://www.openldap.org/project/
>

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