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Troubleshooting LiveCache connection issues

Very commonly after major SCM upgrades(I.e: 5.1 to 7.0 EHP2), which also requires a major LiveCache upgrade(i.e: 7.7.x.x to 7.9.x.x), conectivity issues from SCM system to LiveCache DB might happen.

More often, shortdumps with the below message happen:

Runtime
Errors         DBIF_DSQL2_CONNECTERR

Except.               
CX_SY_NATIVE_SQL_ERROR

Short
text

     Error setting up a
secondary database connection

What
happened?

     Connection to
database system not possible with identifier "LCA".

Further narrowing down the error, by inspecting the relevant work process trace file, the following error is recorded:

B  Loading DB
library '/usr/sap/SQ7/SYS/exe/run/dbsdbslib.o' ...
M  *** ERROR =>
DlLoadLib()==DLENOACCESS - dlopen("/usr/sap/SQ7/SYS/exe/run/dbsdbslib.o")
FAILED
  "rtld: 0712-001 Symbol
getColumnLabel__Q2_6SQLDBC24SQLDBC_ResultSetMetaDataCFsPcQ2_25SQLDBC_StringEncodingType8EncodingLPL
was ref
      from module /usr/sap/SQ7/SYS/exe/run/dbsdbslib.o(), but a" 
(errno=8,Exec format error) [dlux.c       445]

{root-id=51C15BEF80481700E10080000A49231C}_{conn-id=00000000000000000000000000000000}_0

*** ERROR => Couldn't load library
'/usr/sap/SQ7/SYS/exe/run/dbsdbslib.o'
[dbcon.c      5767]

{root-id=51C15BEF80481700E10080000A49231C}_{conn-id=00000000000000000000000000000000}_0

***LOG BYG=> could not load library for database connection LCA       
[dbds         862]

In this example, system cannot locate the LiveCache client libraries or even the SAP Kernel database library(dbsl), which can be caused by wrong client version, wrong OS environment settings or even a crippled Client/Kernel installation.

To assist on the troubleshoot of this kind of problem, the following KBA was released:

1875819 - LiveCache connection not working

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