Type Conversion from Int to Float in the Arduino Code

A couple days ago i played around with a SI7021 on my ESP8266 and recognized that the temperature output of the used Library  was given as an integer, so without a comma or dot for the separation of the decimal places. Like 2495 instead of 24,95°C. Not really problematic, but for using the numbers with MQTT it was relevant to convert it to the proper type which was “Float” ...

SAP HANA: check_pse_store.cc(00178) : Trying to add invalid certificate as part of own certificate PEM

If you try to manage your HANA certificates via SQL you might want to set the “OWN CERTIFICATE” where you come across the following error in your SQL Commandline: 1 2 Could not execute 'ALTER PSE HANA\_X509 SET OWN CERTIFICATE '-----BEGIN RSA PRIVATE KEY----- ...' SAP DBTech JDBC: [5634]: Certificate definition inconsistent Looking at the indexserver trace you will find: 1 2 [113263]{213394}[35/-1] 2016-05-24 15:44:56.384001 e Crypto check\_pse\_store.cc(00178) : Trying to add invalid certificate as part of own certificate PEM: exception 1: no.301116 (Crypto/CertAdm/CertStore/CertificateStoreChecker.cpp:83) Basic constraints not supported with certificate version! Stacktrace 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 exception throw location: 1: 0x00007f85d03166e4 in Crypto::CertificateDefinitionInvalidException::CertificateDefinitionInvalidException(char const\*, char const\*, int)+0x10 at Exception.cpp:240 (libhdbbasement.so) 2: 0x00007f85d02ebf1b in Crypto::CertAdm::CertificateStoreChecker::checkCreate(ptime::Transaction&, ltt::basic\_string > const&)+0x7d7 at CertificateStoreChecker.cpp:83 (libhdbbasement.so) 3: 0x00007f85ba4dcaac in ptime::QueryChecker::alter\_pse(ptime::qp\_alter\_pse const\*, ptime::Query::Plan::SecurityContext\*)+0x4c8 at check\_pse\_store.cc:168 (libhdbrskernel.so) 4: 0x00007f85ba5c0a19 in ptime::QueryChecker::check\_ddl(ptime::qp\_ddl const\*, ptime::Query::Plan::SecurityContext\*)+0x1e85 at query\_check.cc:1966 (libhdbrskernel.so) 5: 0x00007f85ba5c6d73 in \_ZN5ptime12QueryChecker5checkERNS\_11TransactionEPKcPKNS\_13qp\_parse\_treeEPNS\_21so\_transient\_calcplanEPN7ltt\_adp6vectorIN4expr8typeenum8TypeEnumEN3ltt17integral\_constantIbLb1EEEEEPNS\_7IdTableEPNSB\_INSF\_4pairINS\_15qp\_column\_ref\_tENS\_5fti\_tEEESH\_EEPN13Authorization3SQL12SQLCheckListEbS4\_S4\_PNS\_5Query4Plan16SQLScriptContextEPNSX\_15SecurityContextEPNS\_11ProcCheckerEbPNS\_10SQLWarningEbPbPibb+0x500 at query\_check.cc:333 (libhdbrskernel.so) 6: 0x00007f85bb7c7391 in ptime::Query::\_check(ptime::qo\_Context\*, ptime::Transaction&, char const\*, ptime::qp\_parse\_tree const\*, char const\*, char const\*, bool, ptime::IdTable\*, ptime::so\_transient\_calcplan\*, ptime::Query::Plan::SQLScriptContext\*, ptime::Query::Plan::SecurityContext\*, unsigned long, bool\*, int\*, bool, bool)+0x1b0 at query.cc:5589 (libhdbrskernel.so) 7: 0x00007f85bb7bd73b in ptime::Query::compile\_parse\_tree(ptime::Transaction&, char const\*, bool, char const\*, char const\*, void\*, ptime::Query::Plan\*, ptime::ptl::stp\_heap\*, ptime::qo\_Context&, ptime::Query::PlanVizQueryFlag&, ptime::IdTable\*, bool, bool, bool, unsigned long, bool, bool, bool, ptime::qo\_Rel\*\*)+0x5d7 at query.cc:3493 (libhdbrskernel.so) 8: 0x00007f85bb7c4b18 in ptime::Query::compile(ptime::Transaction&, char const\*, bool, char const\*, char const\*, char const\*, ptime::Query::PlanHandle&, ptime::IdTable\*, bool, bool, bool, bool, unsigned long\*, ptime::qo\_Context\*, bool, char const\*, bool, ltt\_adp::basic\_string, ltt::integral\_constant > const\*, bool, bool, bool, ptime::qo\_Rel\*\*, bool, bool)+0x1204 at query.cc:1380 (libhdbrskernel.so) 9: 0x00007f85bb80dfec in ptime::Query::PlanCache::compile\_(ptime::Transaction&, char const\*, char const\*, bool, char const\*, ptime::Query::PlanHandle&, unsigned long\*, ptime::Query::Plan::CustomPlanInfo const&, bool)+0x298 at query\_cache.cc:920 (libhdbrskernel.so) 10: 0x00007f85bb818231 in ptime::Query::PlanCache::compile\_and\_insert\_(ptime::Transaction&, char const\*, char const\*, bool, char const\*, ptime::Query::PlanHandle&, ptime::Query::Plan::CustomPlanInfo const&, bool)+0x140 at query\_cache.cc:578 (libhdbrskernel.so) 11: 0x00007f85bb81a37a in ptime::Query::PlanCache::lookup\_or\_compile\_(ptime::Transaction&, char const\*, char const\*, bool, char const\*, ptime::Query::PlanHandle&, bool)+0x696 at query\_cache.cc:478 (libhdbrskernel.so) 12: 0x00007f85bb81b080 in ptime::Query::PlanCache::lookup\_or\_compile(ptime::Transaction&, char const\*, char const\*, bool, char const\*, ptime::Query::PlanHandle&, bool)+0xb0 at smartptr\_handle.hpp:349 (libhdbrskernel.so) 13: 0x00007f85bbb577ba in ptime::Statement::lookupOrCompileCode\_()+0x116 at Statement.cc:891 (libhdbrskernel.so) 14: 0x00007f85bbb625cd in ptime::Statement::compile\_(Execution::Context&, char const\*, bool, bool, bool)+0x749 at Statement.cc:1009 (libhdbrskernel.so) 15: 0x00007f85bbafc607 in ptime::PreparedStatement::compile\_(Execution::Context&, char const\*, bool, bool, bool)+0x93 at PreparedStatement.cc:404 (libhdbrskernel.so) 16: 0x00007f85bba59ad6 in ptime::Connection::prepareStatement(Execution::Context&, ptime::SubTransaction\*, char const\*, char const\*, char const\*, int, int, bool, bool, bool, int, bool)+0x422 at Connection.cc:2373 (libhdbrskernel.so) 17: 0x00007f85bba471f4 in ptime::Connection::prepareStatement(ptime::SubTransaction\*, char const\*, char const\*, char const\*, int, int, bool, bool, bool, int, bool)+0xe0 at Connection.cc:2149 (libhdbrskernel.so) 18: 0x00007f85bba46337 in ptime::Connection::prepareStatement(ptime::SubTransaction\*, char const\*, bool, bool, int, bool)+0x43 at Connection.cc:2091 (libhdbrskernel.so) 19: 0x00007f85bba46376 in ptime::Connection::prepareStatement(char const\*, bool, bool, int, bool)+0x22 at Connection.cc:2081 (libhdbrskernel.so) 20: 0x00007f85bec80495 in ptime::SessionCodecNewdb::deCreateQidPrepared(Execution::Context&, Communication::Protocol::RequestPacket&)+0x4b1 at sm\_codec\_newdb.cc:1756 (libhdbsqlsession.so) 21: 0x00007f85bec80e60 in ptime::SessionCodecNewdb::dVendorMessage(Execution::Context&, ptime::orawstream&)+0x370 at sm\_codec\_newdb.cc:669 (libhdbsqlsession.so) 22: 0x00007f85bec434e9 in ptime::SessionCodec::decodeMessage(Execution::Context&, ptime::orawstream&)+0x45 at sm\_codec.cc:250 (libhdbsqlsession.so) 23: 0x00007f85becac2b6 in ptime::SessionHandler::doDecodeMessage\_(ptime::CommEventObjects&)+0x42 at sm\_handler.cc:1239 (libhdbsqlsession.so) 24: 0x00007f85becb286b in ptime::SessionHandler::receiveMessage(Execution::Context&, ptime::CommEvent\*)+0x3c7 at sm\_handler.cc:1513 (libhdbsqlsession.so) ...

SAP HANA virtualized on VMware vSphere

Today i found a helpful Link at SAP regarding the virtualization of SAP HANA on VMware vSphere: http://www.saphana.com/docs/DOC-3334  ...

SAP HANA SPS 10 What's New: SAP DB Control Center

http://scn.sap.com/community/hana-in-memory/blog/2015/06/30/sap-hana-sps-10-whats-new-sap-db-control-center--by-the-sap-hana-academy  ...

Performance difference of SAP HANA on virtualization versus native

I just researched how much the difference between a virtualized versus a native Installation of SAP HANA might be in terms of performance. When looking at the different sites, i was finally able to be find a blog entry of VMware  where the author describes the result of the SAP BW-EML Benchmark which was run on native and virtual environments using a HP DL580 Gen8, 4 processors with 60 cores / 120 threads. ...

Enabling autostart of SAP HANA Database on serverboot

A while ago one of our HANA appliances crashed due to a hardware failure and i recognized that not all databases had started properly. This can be chose during the installation and different persons have installed the databases differently. But how to fix that? Logon to the operating system of the SAP HANA Appliance with adm or change to adm. Edit: /hana/shared/#SID#/profile/#SID#_HDB#INSTANCE_NUMBER#_#HOSTNAME#: 1 vi /hana/shared/$SAPSYSTEMNAME/profile/$SAPSYSTEMNAME\_HDB\* Change "Autostart = **0**" to "Autostart = **1**" ...

Creating SAP HANA User IDs from Netweaver 7.40 ABAP Stack

If you want to create users on the HANA Database from the Netweaver 7.40 ABAP Stack, you might want to take a look at this tutorial on SAP SCN  . ...

Running the HANA Memory Utilization Overview outside of HANA Studio

Today i had issues with my browser in HANA Studio which lead to the issue that i was not able to open the memory utilization overview in HANA Studio. But after some debugging of the app, i found that it is possible to start it in Google Chrome as well. First open the memory utilization url in a Chrome Tab which is at: 1 2 HTTP: http://<hostname>:80/sap/hana/admin/st/index.html HTTPS: https://<hostname>:43/sap/hana/admin/st/index.html Then open the Javascript Developer Console in Chrome which is via Menu -> Tools -> Java Script Console or via CTRL+SHIFT+J: ...

2016-04-09 158 words 1 min Uli