What is a Local Transaction? A local transaction is where a number of business operations are under the control of a single resource manager (typically the database resource manager). The TIBCO iProcess Engine process will be under the control of the resource manager so that the entire process will either be committed to the database or rolled back if one of the operations fail. The following diagram illustrates a procedure using EAI Database steps to update data in the local database. Figure 1 A Local Transaction Example of a Local Transaction The following is an example of how a business procedure is designed so that all the steps are either committed or not committed using the local resource manager. In a banking environment you want to make sure that all the accounts are updated correctly so that the balances are totalled. The ideal scenario is where all the processes are committed in one go so that money is deducted from one account and added to another. For example, if money is to be transferred from a savings account to a current account, two accounts will need updating. Both accounts need to be changed accordingly. It would cause serious problems if only one account was updated. If the update to the savings account was successful but the update to the current account failed, there would be a discrepancy in the totals. However, because the step is part of the local transaction, the whole transaction will fail and the accounts are rolled back to their original state.