Apparatus, method and computer program product for client/server computing with reduced cross-process calls

A server for use in a client/server computing system for processing a transaction, the client/server computing system being of at least a three-tier process type, where a first tier process initiates the transaction and contacts a second tier process to further the transaction which in turn contacts a third tier process which contains local data to be updated in the transaction, the server, which runs the second tier process, and which has no local data to be updated in the transaction, comprising:

• means for receiving a first transaction context from the first tier process requesting that the second tier process be registered in the transaction, said first transaction context including a reference to the first tier process to thus inform the second tier process that the second tier process should register into the transaction with the first tier process;
• means for, upon receiving the first transaction context and because the second tier process has no local data to be updated in the transaction, creating a second transaction context for sending to the third tier process, said second transaction context including a reference to the first tier process to thus inform the third tier process that the third tier process should register into the transaction with the first tier process, wherein if the second tier process had local data to be updated in the transaction the second tier process would instead create the second transaction context with a reference to the second tier process;
• and
• means for passing on the second transaction context to said third tier process thus informing said third tier process that it should register itself into the transaction directly with the first tier process without going through the second tier process.