Oracle 11g How to determine the database character set. This is only a quick note for something I keep forgetting. So to determine the oracle database character set use the following simple SQL statement.racle 11g How to determine the database character set. This is only a quick note for something I keep forgetting. So to determine the oracle database character set use the following simple SQL statement.
Retinal detachment - Causes. Causes of retinal detachment. The most common cause of retinal detachment is tiny breaks developing inside the retina. The breaks allow the fluid found between the retina and the lens of the eye to leak underneath the retina. A build-up of fluid can cause the retina to pull away from the blood vessels that supply it with blood.
Posterior vitreous detachment (PVD) is a common cause of retinal tears. Itâs a normal part of aging that causes the vitreous gel to pull away from the retina in places. It's usually harmless and often has no symptoms. But sometimes, the gel builds up so much and pulls so hard that it tears the retina.