3217204 - How to drop or rename dbfile path which was created incorrectly with SPACE character in filename ?

A dbfile is added with SPACE character in filename. 
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$ dbisql -c 'uid=dba;pwd=sqlsql;eng=iq161sp04pl11_iqdemo' -nogui

(dba)> alter dbspace iq_main add file iq_main_2 'iqdemo_main.iq MAIN' size 200MB  -- Bad physical path 

(dba)> select DBFileName , Path from sp_iqfile()
DBFileName     Path
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IQ_SYSTEM_MAIN iqdemo.iq
iq_main        iqdemo_main.iq
iq_main_2      iqdemo_main.iq MAIN
IQ_SYSTEM_TEMP iqdemo.iqtmp

(4 rows)
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IQ 16.x

KBA , BC-SYB-IQ , Sybase IQ , Problem