I could be wrong, but, I believe that OpenLDAP issues several BDB transactions when performing a single LDAP write operation (modify, add, delete). I believe that a separate transaction is used for each index update as well as a transaction for each affected datum. Owen --On Monday, April 25, 2005 11:48 PM -0700 Lia Tarta <firstname.lastname@example.org> wrote: > Thanks for the reply. > Unfortunately, the provided solution is not an option > for me. > I have found this RFC: > LDAP: Grouping of Related Operations > <draft-zeilenga-ldap-grouping-06.txt> > > and I am wondering if I could use grouped operations > for my application. Actually, the question is: when > performing 2 grouped operations, does OpenLDAP perform > them within a single bdb transaction, or in separate > transactions? > I am asking that because I figure that Openldap opens > a bdb transaction, for example, when it performs a > ldapadd operation. > Thanks > > --- Howard Chu <email@example.com> wrote: >> Lia Tarta wrote: >> >> > Hello >> > As I understand, OpenLDAP does not support >> > transactions in its current version. However, the >> bdb >> > backend is said to be transactional. My question >> is, >> > how do I use these transactions for bdb? Is there >> any >> > way of performing a transactional operation that >> makes >> > 2 calls (e.g.: to ADD calls) to OpenLDAP? >> > Thanks >> > >> Not directly. back-bdb uses transactions within a >> single operation, to >> maintain the consistency of all the indices >> associated with a single >> entry. You still need a higher level control layer >> to enforce >> transactions across multiple operations. You could >> write an overlay to >> provide some form of transactional LDAP features, it >> doesn't need to be >> implemented in the backend itself. Of course, it >> would require a fair >> amount of effort to provide all of the >> recoverability features that one >> expects from a transactional system. >> >> -- >> -- Howard Chu >> Chief Architect, Symas Corp. Director, >> Highland Sun >> http://www.symas.com >> http://highlandsun.com/hyc >> Symas: Premier OpenSource Development and Support >> >> > > > > __________________________________ > Do you Yahoo!? > Yahoo! Small Business - Try our new resources site! > http://smallbusiness.yahoo.com/resources/ -- If it wasn't crypto-signed, it probably didn't come from me.
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