Hi Jorge,
Exactly the issue is with user credentials here as what i also found in provided logs
Error: command execution failed.
Provide password for database user sapsso.
And for same you tried well at your end.
I executed command adding password option -p still nothing
> ./sybctrl exec_cmd -f /export/SUM/abap/bin/SYBDROPSHDSSO.SQL -u sapsso -pPASS -o /export/SUM/abap/log/SYBDROPSHDSSO.LOG
Here i would suggest you to follow the solution from SAP Note 1990192 - SYB: Add. Info - Software Update Manager 1.0 SP12
c) Any stack
-----------------------<D055517, Sep 11, 2012>-----------------------
PREP_PRE_CHECK/INPUT_PRE: sapsso password not accepted (AIX only)
Problem:
Log file SYBCONCHECKSSO.LOG shows the following entry:
CT-LIBRARY error:
ct_connect(): protocol specific layer: internal Client Library
error: There is a tds login error. The installed
encryption handler returned a status that was not CS_SUCCEED.
Solution:
Log on to the operating system as user syb<sid>.
cd /sybase/<SID>/OCS-15_0/bin
mv isql isql_orig
mv isql64 isql
To check that the solution is working, compare the result of
isql -Usapsso -S<SID>
with the result of
isql -X -Usapsso -S<SID>
The result should be the same(you could log on to the database).
Addition to it you could refer SAP Note 1797040 - SYB: saphostctrl/sapdbctrl - Using the secure storage
Hope this will help you.
Good luck !!