Solution : https://service.sap.com/sap/support/notes/721359 (SAP Service marketplace login required)
Key words : 
000  /usr/opt/db2/log/db2inst1/node0000/sql00001/sqlspcs, backup / restore  db2 load  tablespace extension, errno means etxtbsy 26 =text file busy, /general/3rdparty/db2/db6_common/note, quiesce tablespaces  create/drop container, db2 udb v8 fixpak 6b, file   db2support_<version>_<os>, actions changing tablespace states, opens database control files, db2 control files
Related Notes : 
       
| 83819 | DB6: Collecting support data |