Solution : https://service.sap.com/sap/support/notes/1333619 (SAP Service marketplace login required)
Key words :
latch 'child object queue header operation' caused eviction7552042, alter tablespace drop datafile generates corrupted redo record8834933, alter tablespace drop datafile drops non_empty file 5623467, kcbs hang/ hash latch clean, ro - fast object reuse', high log file sync, previously released kcb merge, previously released single patches, individual tbs merge patch 8741616, patch collection note 1137346 lists
Related Notes :
| 1485436 | ksp* merge fix for Oracle 10.2.0.4.x |
| 1137346 | Oracle 10.2.0: Patches/patch collections for Oracle 10.2.0.4 |