A moderator having wrongly rejected this post, in an e-mail exchange with the SCN Moderation and Collaboration team (KMM732464V46915L0KM), we have agreed that I will re-post it with the following preamble: I hereby confirm that prior to asking this question I have searched the SCN forums for an answer. I used 'HANS', 'hdbindexserver', 'hdbxsengine', and 'crash' as keywords. Let me also stipulate that this question is not a duplicate of http://scn.sap.com/thread/3938580 because it asks help with a different error. My question follows: In my HANA intallation the services hdbindexserver and hdbxsengine are not starting either automatically or after > HDB start Could it be the reason that I am unable to connect to my HANA instance from HANA Studio? If so, where can I find information about why those services failed to start? They are not mentioned in the log files under /var/tmp/hdb_* I am not sure if it is correct to run them manually, but when I run hdbxsengine from under the "system administrator user", I get: Crash at /sapmnt/ld7272/a/HDB/jenkins_prod/workspace/ FA_CO_LIN64GCC47HAPPY_rel_fa~newdb100_maint_rel/sys/src/ Basis/System/impl/SharedMemorySegment.cpp : 346 Reason: File /var/tmp/.SHM_SAP_IPMM_Mutex_0028_no-sid could not be opened / created. Ensure existing, writable directory /var/lib/hdb. RC:13 Permission denied I am running HANA SPS10 on SLES 11 SP 4.