GSE1015N A spatial reference system named "NAD83_SRS_1" does not exist I am following this tutorial

https://www.ibm.com/developerworks/data/tutorials/dm-1202db2spatialdata1/index.html

And, running the sql "Listing 3. Contents of import_counties.sql" in IBM DB2 (on Windows), the CLP returns this error:


Is there anyone experienced this error before, could you please tell me how I get it solved? Because I already googled, and tried out many solutions including reinstall DB2 but the problem is still there. Is there any place that I can download "NAD83_SRS_1" and install it separately.
I just realized that there was a bug when I enable the databases to support spatial function.

db2se enable_db sample


While running this command line, it was interupted, but DB2 still reports that it successfully enabled the spatial function. Actually, this command takes very long to finish (more than 5 mins in my case), which makes me thought it gets stuck and interupt it with Ctrl+C. So the solution is just to wait until it finish without touching any keyboard.