看看这个有什么问题，死活没有搞清楚

cat create_tb.sql

db2 "create tablespace tpidx managed  by database using (device '/dev/db2idxdg/db2idxlv' 50G) bufferpool ibmdefaultbp";

db2 -tvf create_tb.sql

db2 "create tablespace tpidx managed  by database using (device '/dev/db2idxdg/db2idxlv' 50G) bufferpool ibmdefaultbp"

SQL0104N  An unexpected token "db2" was found following "BEGIN-OF-STATEMENT".  

Expected tokens may include:  "SELECT".  SQLSTATE=42601