The -s option of the db2iupdt command has been deprecated and might be removed in a future release.
The db2iupdt command updates an instance to run on a DB2® copy that has a new DB2 database product or feature installed, to run on a DB2 copy of the same version as the DB2 copy associated with the instance, or to update the instance type to a higher level instance type. On UNIX and Linux operating systems, the -s parameter ignores the existing sync point manager (SPM) log directory.
On UNIX and Linux operating systems, do not use this option of the db2iupdt command.