Review Semaphore errors.

OSD-04400

Unable to acquire internal semaphore for process

Cause: Oracle Database has exceeded the maximum number of connections.

Action: Delete any unused connections and try again.

OSD-04401

WaitForSingleObject() failure, unable to obtain semaphore

Cause: Unexpected return from Windows system service WaitForSingleObject().

Action: Check operating system error code and operating system documentation.