Closing fossil sqlite session will show error if content(uuid) function was used.
  
<pre>
c:\soft\msys\home\user\fossil>fossil ver
This is fossil version [bd75ea06b8] 2010-12-04 19:25:04 UTC
c:\soft\msys\home\user\fossil>fossil sqlite3
SQLite version 3.7.4
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> select * from blob where uuid='2e68abae2f7da03c7418cfe4eedc11c484fbee82';
9935|622|2886|2e68abae2f7da03c7418cfe4eedc11c484fbee82|
sqlite> select content('2e68abae2f7da03c7418cfe4eedc11c484fbee82');
...
there is a content of artifact [2e68abae2f7da03c7418cfe4eedc11c484fbee82] listed
...
sqlite> .quit
Error: cannot close database "unable to close due to unfinalised statements"

c:\soft\msys\home\user\fossil>
</pre>

Error: cannot close database "unable to close due to unfinalised statements" with fossil sqlite3 command