Solution : https://service.sap.com/sap/support/notes/1004973 (SAP Service marketplace login required)
Key words : 
documentation  -> database upgrades  -> maxdbthe valid maxdb dvd material numbers, registration file '/usr/spool/sql/ini/sap_dbtech, application group  -> additional components  -> maxdbfor maxdb version 7, <dbm password> param_getvalue _unicode solution topics, exclusive  sql_execute commit work  sql_releasealternatively, <superdba password>  sql_execute alter user superdba, sdba /var/spool/sqlthese errors, server utilities  [/sapdb/programs]  stderr, maxdb instance update exited abnormallysolution, /    important general information               ii/   errors
Related Notes : 
       
| 1413628 | Upgrade to MaxDB Version 7.7 or higher, restart not possible | 
| 1399009 | Content Server 6.40 on Windows Server 2008 and Win2008 R2 | 
| 1380842 | Emergency Shutdown with error 'IdxOrder.SubNode invalid' | 
| 1144394 | Start of application server failed -888 could not load ... | 
| 1128989 | "command timeout exceeded" with DBMRFC session mode | 
| 1123603 | ABAP Dictionary adjustments for MaxDB 7.7 | 
| 1004886 | MaxDB Version 7.7 parameter recommendations | 
| 1002641 | SQL error -4004/-942 in DB02 during index consistency check | 
| 916795 | Replacement for MaxDB system table SYS.ALL_TAB_COLUMNS |