2324350 - Db2diag.log RETCODE : ZRC=0xFFFFEC46=-5050 after upgrade to DB2 LUW 10.5

Large numbers of errors similar to those specified below occur in the db2diag.log file, after database is upgraded to 10.5 from lower release:

2016-01-01-00.00.00.00000+000       LEVEL: Error
PID     : 0000                 TID  : 0000PROC :
INSTANCE: db2sid               NODE : 000
FUNCTION: DB2 UDB, trace services, sqlt_logerr_data (secondary logging
func, probe:0
MESSAGE : ptr->chksum
DATA #1 : Hexdump, 4 bytes
0x00007FFFFFFEAC30 : 6152 0000                                  aR..

 2016-01-01-00.00.00.00000+000        LEVEL: Error
PID     : 0000                 TID  : 0000PROC :
INSTANCE: db2sid               NODE : 000
FUNCTION: DB2 UDB, trace services, sqlt_logerr_data (secondary logging
func, probe:0
MESSAGE : ptr->dbm_cfg_version
DATA #1 : Hexdump, 2 bytes
0x00007FFFFFFEAC44 : 0929                                       .)

2016-01-01-00.00.00.00000+000       LEVEL: Error
PID     : 7961                 TID  : 0000PROC :
INSTANCE: db2sid               NODE : 000
FUNCTION: DB2 UDB, trace services, sqlt_logerr_data (secondary logging
func, probe:0
MESSAGE : dbm config
DATA #1 : Dumped object of size 16384 bytes at offset 1338896440, 36
bytes
/db2/SID/db2dump/0000.0.000.dump.bin

2016-01-01-00.00.00.00000+000       LEVEL: Severe
PID     : 0000                 TID  : 0000PROC :
INSTANCE: db2sid               NODE : 000
FUNCTION: DB2 UDB, config/install, sqlf_alert, probe:1
DATA #1 : Hexdump, 4 bytes
0x00007FFFFFFE9940 : 46EC FFFF                                  F...

2016-01-01-00.00.00.00000+000       LEVEL: Severe
PID     : 0000                 TID  : 0000PROC :
INSTANCE: db2sid               NODE : 000
FUNCTION: DB2 UDB, config/install, sqlfcsys, probe:1
RETCODE : ZRC=0xFFFFEC46=-5050

2016-01-01-00.00.00.00000+000       LEVEL: Event
PID     : 0000                 TID  : 0000PROC :
INSTANCE: db2sid               NODE : 000
FUNCTION: DB2 UDB, RAS/PD component, pdLogInternal, probe:120
START   : New Diagnostic Log file
DATA #1 : Build Level, 152 bytes
Instance "db2sid" uses "64" bits and DB2 code release "SQL0907A"
with level identifier "080B0107".
Informational tokens are "DB2 v9.7.0.10", "special_34106",
"IP23657_34106", Fix Pack "10".

DB2 for LUW database releases:

dasdrop, dump, PMR, insttype, secondary logging func, SQL5050C, sqlf_alert, dbm_cfg_version, chksum, valid , KBA , BC-DB-DB6 , DB2 Universal Database for Unix / NT , Problem