This section includes the following topics:

■ Replace Base: High-Level Process Flow

■ Replace Base: Procedure for Upgrading

The Replace Base option enables you to upgrade the DAC Repository when you are

phasing out an older release of a transactional application and moving to a newer

release, for example, phasing out Siebel 7.5.3 and moving to Siebel 7.8.

10.6.1 Replace Base: High-Level Process Flow

Figure 10–4 shows a high-level process flow for using the Replace Base option to

upgrade the DAC Repository when you are phasing out an older release of a

transactional application and moving to a newer release.

The term base is used to refer to a source or target container that you have not changed

or customized in any way.

Figure 10–4 Upgrade Process for Replace Base Option

In Step 1 of the high-level process flow, you import the repository data for the new

base container into the repository temporary tables. This repository is referred to as the

source in the Upgrade/Merge Wizard

In Step 2, you create a Difference Report that compares the new base container (source

repository) with the existing base container (including customizations). The existing

base container is referred to as the target

In Step 3, you accept or reject the objects that the Difference Report shows as being

present in the source but not the target or changed in the source but not the target. See

Section 10.8.3, "Possible Repository Merge Outcomes Based on Your Decisions" for a

description of how objects are merged based on the action you take.

In Step 4, after you have resolved the differences, you then execute the merge. In Step

5, the DAC references the customizations in the newly merged repository with the new

base container.

Note: The repository data is imported from a file system and should

be in the DAC 10.1.3.4 format. If it is in the 7.9.x format, you should do

the following:

1. Restore the repository data into a database using the 7.9.x DAC (using the

regular DAC import process).

2. Install and configure DAC 10.1.3.4 to the 7.9.x repository.

3. Export the relevant source system container to a file folder.

The metadata in the folder in Step 3 above will become the source for this

upgrade.

10.6.2 Replace Base: Procedure for Upgrading

Follow this procedure to use the Replace Base option to upgrade the DAC Repository

when you are phasing out an older release of a transactional application and moving

to a newer release.

Before you begin this procedure you should review the section "Resolving Object

Differences in the View Difference Report" to gain an understanding of your options

for resolving object differences.

To upgrade an existing DAC Repository

1. Navigate to the Upgrade/Merge Wizard by selecting Tools, then DAC Repository

Management, and then Upgrade/Merge Wizard.

2. From the drop-down list, select Replace Base, and then click OK.

The Import Source System Container dialog box appears.

3. Click Change import/export folder to navigate to the directory that holds the

metadata files for the new base container to which you are upgrading.

4. Select the appropriate container from the Source System Container drop-down list,

and click OK.

5. In the Importing Tables dialog box, re-type the text in the text box to confirm you

want to proceed, and click Yes.

When the import process is complete, the Importing Tables dialog box tells you

how long the process took.

6. Click OK.

The Create Difference Report dialog box appears.

7. Create the Difference Report to view the differences between the new and existing

DAC repositories.

a. Enter a name for the Difference Report, or leave the default name.

b. Select the appropriate existing container.

c. (Optional) Enter a description for the Difference Report.

d. Click OK.

When the Difference Report is complete, the Creating Difference Report dialog

box tells you how long the process took.

e. Click OK.