Transactions in Weblogic 5.1

Question

Hi there,
          I'm fiddling a bit with transactions in Weblogic 5.1, and I might have
          misunderstood a few things, 'cause it seems like Weblogic is not doing
          the right thing.
          I have this entity bean that does not do any database connects, in fact
          it does not use any TX resources, but I'd like to serialize access to it
          anyway - and I had the impression that the Weblogic server could do this
          for me. Having the entity bean deployed with "Mandatory" transcation and
          "Serializable" isolation level does however not give me the desired
          result - I can hold the entity bean in multiple transaction contexts :-(
          So for me it seems like Weblogic Server 5.1 does not do any transaction
          serialization by itself, and documentation I have stumbled upon indicate
          that the server relies on JDBC drivers and such to provide transaction
          isolation. Seems like the entity bean itself is not considered a
          TxResource whereas an underlying database connection is.
          Am I right? -- if I am, does this mean that in order to serialize access
          under transaction to an entity bean I must have data base access?
          regards
          Jakob
          

Answer 1

          Hi Jacob,
          Transaction isolation levels are ment for database transactions only..but the
          transaction attributes not the same..you can apply
          the transaction attributes to session bean which may not access db at alll
          Thanks
          Ramesh
          Jakob Dalsgaard <[email protected]> wrote:
          >Hi there,
          >
          >I'm fiddling a bit with transactions in Weblogic 5.1, and I might have
          >
          >misunderstood a few things, 'cause it seems like Weblogic is not doing
          >
          >the right thing.
          >
          >I have this entity bean that does not do any database connects, in fact
          >
          >it does not use any TX resources, but I'd like to serialize access to
          >it
          >anyway - and I had the impression that the Weblogic server could do this
          >
          >for me. Having the entity bean deployed with "Mandatory" transcation
          >and
          >"Serializable" isolation level does however not give me the desired
          >result - I can hold the entity bean in multiple transaction contexts
          >:-(
          >
          >So for me it seems like Weblogic Server 5.1 does not do any transaction
          >
          >serialization by itself, and documentation I have stumbled upon indicate
          >
          >that the server relies on JDBC drivers and such to provide transaction
          >
          >isolation. Seems like the entity bean itself is not considered a
          >TxResource whereas an underlying database connection is.
          >
          >Am I right? -- if I am, does this mean that in order to serialize access
          >
          >under transaction to an entity bean I must have data base access?
          >
          >regards
          >Jakob
          >