The Oracle Internet Directory (OID) was introduced with Oracle8i. OID serves the same function as Oracle Names in that it gives users a way to connect to an Oracle Server without having a client-side configuration file. However, OID differs from Oracle Names in that it is an LDAP (Lightweight Directory Access Protocol) direc- tory; it does not merely support the Oracle-only Oracle Net protocol. Oracle Connection Manager Each connection to the database takes up valuable network resources, which can impact the overall performance of a database application. Oracle’s Connection Man- ager, illustrated in Figure 1-3, reduces the number of Oracle Net client network con- nections to the database through.
