thanks for the fix. I replaced the libnetxms.dll with the provided and Dashboard+Perfomance Tabs works like before... 

Many many thanks for searching for this bug... 

Greetings
Marco

I have found the bug. Please try to replace libnetxms.dll to attached.

Best regards,
Victor

libnetxms.dll

i installed NetXMS via the provided installer.  (Installed via command:  netxms-2.2.11-7-x64.exe /silent )

After that, log file shows the following:

2019.01.10 17:16:45.714 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_4437 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=0000000008D3DD40 local=0000000008D3DD40
2019.01.10 17:16:45.714 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_4437 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:16:45.751 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_6326 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=0000000008AFDE60 local=0000000008AFDE60
2019.01.10 17:16:45.751 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_6326 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:16:45.831 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_4902 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=00000000090ADD50 local=00000000090ADD50
2019.01.10 17:16:45.831 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_4902 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:16:45.928 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_4426 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=000000000885DD50 local=000000000885DD50
2019.01.10 17:16:45.928 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_4426 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:16:45.948 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_6328 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=000000000842DD80 local=000000000842DD80
2019.01.10 17:16:45.948 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_6328 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:16:46.035 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_6326 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=000000000871DE50 local=000000000871DE50
2019.01.10 17:16:46.035 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_6326 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:16:51.510 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_1561 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=0000000008D3DD40 local=0000000008D3DD40
2019.01.10 17:16:51.510 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_1561 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:16:51.510 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_1524 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=0000000008AFDE60 local=0000000008AFDE60
2019.01.10 17:16:51.511 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_1524 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:17:06.381 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_6326 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=0000000008D3DD40 local=0000000008D3DD40
2019.01.10 17:17:06.382 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_6326 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:17:06.384 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_4902 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=000000000885DD50 local=000000000885DD50
2019.01.10 17:17:06.384 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_4902 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:17:06.429 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_6326 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=000000000842DD80 local=000000000842DD80
2019.01.10 17:17:06.429 *E* SQL query failed (Query = "SELECT idata_timestamp,idata_value FROM idata_6326 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000"): Query was empty
2019.01.10 17:17:06.484 *E* ** PREPARE ERROR ** query='SELECT idata_timestamp,idata_value FROM idata_6328 WHERE item_id=? AND idata_timestamp>=? AND idata_timestamp<=? ORDER BY idata_timestamp DESC LIMIT 200000' converted='' ptr=00000000094CDFD0 local=00000000094CDFD0

...and so on...

Hope that helps...

Greets
Marco

Best regards,
Victor

This one:
https://www.netxms.org/download/releases/2.2/2.2.11/netxms-2.2.11-x64.exe

Downloaded File:
D57024956EE56EC9948B5723AD38B23F C:\test\mysql.ddr

Original File in NetXMS bin Directory:
8E4B91633D8B231C7EA9AFA6429C3C31 C:\NetXMS\bin\mysql.ddr

with your mysql.ddr i can't start the NetXMS Core service. There are follwoing error message in log:

2019.01.10 11:12:51.043 *E* Unable to load database driver module "mysql.ddr": Die angegebene Prozedur wurde nicht gefunden.

With the original mysql.ddr i can start the service..

Greets
Marco

Best regards,
Victor

mysql.ddr

Best regards,
Victor

In the NetXMS server log is one more line:

2019.01.10 08:58:14.609 *E* SQL query failed (Query = "SELECT numbering_scheme,row_count,layout_data FROM port_layouts WHERE device_oid=?"): Query was empty

Maybe this one might be help at searching for the root cause of this behaviour...

Greets
Marco

as i wrote, all my Dashbords and Performance Tabs shows randomly DCI Data Errors.  "Cannot get Value for DCI XXX (Database Failure)". Every Time i hit the refresh button the error messages shows in a different field. See attachment please.

Greets
Marco

PS: Thanx for the fast response... 

this query is executed when DCI data is read for showing on graph or for export. Do you have any issues with displaying DCI data?

Best regards,
Victor