Figure 2-4 shows the default OCA installation configuration, consisting of an Oracle9i Single Sign-on (SSO) instance, an OCA instance, and an Oracle9i database, which contains an instance of Oracle Internet Directory (OID). Double-headed arrows connect SSO with both SSO and the database. Another arrow points from the OCA instance to the database.
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The diagram shows web clients connected by double-headed arrows to either the SSO instance or to Oracle Wallet Manager. Separately, thick clients connect directly to the Oracle Wallet Manager, which then connects to Oracle9iAS.