A problem installing Directory Server Enterprise Edition could be caused by one of the following:
Incorrect patches installed
Installing a patch that does not correspond to your architecture
During installation of the Directory Server Enterprise Edition zip distribution, specifying a common agent container port that is already in use
Permissions problems
Specifying an LDAP port that is already in use
The presence of a previous installation
The list of packages being installed is incomplete
Shared components version does not match the JES version
If you encounter a problem doing an upgrade, confirm that you are installing the same type of software distribution as you installed previously. For example, if you installed before using the zip distribution, any upgrade you make must also use the zip distribution.
If you are installing a SunAlert patch, confirm in the read me that you are installing the patch number that applies to your type of distribution.