Closes #582

Closes #582

Author: erikdarlingdata

sp_PerfCheck/sp_PerfCheck.sql

@@ -387,7 +387,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
         name sysname NOT NULL,
         database_id integer NOT NULL,
         compatibility_level tinyint NOT NULL,
-        collation_name sysname NOT NULL,
+        collation_name sysname NULL,
         user_access_desc nvarchar(60) NOT NULL,
         is_read_only bit NOT NULL,
         is_auto_close_on bit NOT NULL,

sp_PressureDetector/sp_PressureDetector.sql

@@ -870,7 +870,7 @@ OPTION(MAXDOP 1, RECOMPILE);',
                     writes bigint NULL,
                     logical_reads bigint NULL,
                     granted_query_memory_gb decimal(38,2) NULL,
-                    transaction_isolation_level nvarchar(30) NULL,
+                    transaction_isolation_level sysname NULL,
                     dop integer NULL,
                     parallel_worker_count integer NULL,
                     plan_handle varbinary(64) NULL,