The install log reports this problem as an error code 14. If the installer is trying to connect to a database using client-server or shared-memory mode, this error probably means that the database is not running. It could also mean that the database is trying to run in single-user mode, but the database is already in use.

If the install log reports error messages like “SYSTEM ERROR: Shared memory access permission denied (1136),” log in as the user who created the database, restart the installer, and continue with the installation.