@Override
		public void updateEnded(long checkinId) {
			dbHandle = null;
			if (updateLock != null && updateLock.haveLock(true)) {
				updateLock.removeLock();
			}
			super.updateEnded(checkinId);
		}
<code>PDBBufferFileManager</code> removes the update lock when 
the update has completed.
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/store/db/PackedDatabase.java