Symptom:
Restore OPS (operational data) failed with messages like:

% restore in progress: Starting Restore...10% completed
/opt/CSCOcpm/bin/iseprerestore.sh: line 244: [: too many arguments
(standard_in) 2: syntax error
(standard_in) 3: illegal character: R
(standard_in) 3: illegal character: R
(standard_in) 3: illegal character: O
(standard_in) 3: illegal character: R
(standard_in) 4: illegal character: O
(standard_in) 4: illegal character: R
(standard_in) 4: illegal character: :
(standard_in) 5: illegal character: P
(standard_in) 6: illegal character: S
% restore in progress: Retrieving backup file from Repository...20% completed
% restore in progress: Decrypting backup data...25% completed
% restore in progress: Extracting backup data...30% completed
/opt/CSCOcpm/bin/iseprerestore.sh: line 244: [: too many arguments
FULL_BACKUP_MNTDMP_2014_10_07_132325.%u.dmp
(standard_in) 2: syntax error
(standard_in) 3: illegal character: R
(standard_in) 3: illegal character: R
(standard_in) 3: illegal character: O
(standard_in) 3: illegal character: R
(standard_in) 4: illegal character: O
(standard_in) 4: illegal character: R
(standard_in) 4: illegal character: :
(standard_in) 5: illegal character: P
(standard_in) 6: illegal character: S
% Error: Insufficient disk space to perform ISE Operation Restore
% Application restore failed

Conditions:
ISE not running