Root crashes on Oracle database access

On our local installation of root, we include the --enable-oracle option
in order to get Oracle database support. However, when we do simple
tests, we get strange crashes. An example of a back trace is
attached. The crashed happened after the commands, entered by hand:

TSQLServer *db = TSQLServer::Connect(“oracle://host:port”,“user”, “pass”);
std::cout << db->GetHost() << std::endl;
std::cout << db->ServerInfo() << std::endl;

The crash happened at ServerInfo() call, while root was processing
the return result set from “SELECT * FROM V$SESSION”. We cannot
reproduce the problem on lxplus, so we suspect some sort of installation
or compile problem? The config options used are:

–build=debug --enable-oracle --enable-python

The system is 32 bit Linux:
uname -a
Linux srv-C2D05-05 2.6.9-55.EL.cernsmp #1 SMP Thu May 10 18:16:29 CEST 2007 i686 i686 i386 GNU/Linux

Any ideas on what we might be doing wrong?

Here is the backtrace:

GNU gdb Red Hat Linux (
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Type “show copying” to see the conditions.
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This GDB was configured as “i386-redhat-linux-gnu”…Using host libthread_db library “/lib/tls/”.

(gdb) run
Starting program: /opt/wbm/programs/root/5.21.04/bin/root.exe
[Thread debugging using libthread_db enabled]
[New Thread -1208289600 (LWP 4912)]

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ROOT 5.21/04 (trunk@25661, Oct 14 2008, 23:17:00 on linux)

CINT/ROOT C/C++ Interpreter version 5.16.29, Jan 08, 2008
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
Detaching after fork from child process 4954.

Program received signal SIGABRT, Aborted.
[Switching to Thread -1208289600 (LWP 4912)]
0x004e07a2 in _dl_sysinfo_int80 () from /lib/
(gdb) bt
#0 0x004e07a2 in _dl_sysinfo_int80 () from /lib/
#1 0x0755f7a5 in raise () from /lib/tls/
#2 0x07561209 in abort () from /lib/tls/
#3 0x07593a1a in __libc_message () from /lib/tls/
#4 0x0759a2bf in _int_free () from /lib/tls/
#5 0x0759a63a in free () from /lib/tls/
#6 0x0035a041 in operator delete () from /usr/lib/
#7 0x0033bd6f in std::string::_Rep::_M_destroy () from /usr/lib/
#8 0x0033bff2 in std::basic_string<char, std::char_traits, std::allocator >::~basic_string () from /usr/lib/
#9 0x0040955b in TOracleStatement::GetString (this=0x8e9b358, npar=0)
at sql/oracle/src/TOracleStatement.cxx:792
#10 0x00403756 in TOracleServer::ServerInfo (this=0x8e4b6d8)
at sql/oracle/src/TOracleServer.cxx:519
#11 0x0516cd43 in G__G__Net_272_0_21 ()
from /opt/wbm/programs/root/5.21.04/lib/
#12 0x00c01a23 in Cint::G__ExceptionWrapper (
funcp=0x516cd12 <G__G__Net_272_0_21(G__value*, char const*, G__param*, int)>, result7=0xbfe04530, funcname=0x8e28ec0 “\001”, libp=0xbfdfe6b0, hash=0)
at cint/cint/src/Api.cxx:381
#13 0x00ca8efe in G__execute_call (result7=0xbfe04530, libp=0xbfdfe6b0,
ifunc=0x8e28ec0, ifn=0) at cint/cint/src/newlink.cxx:2330
#14 0x00ca961e in G__call_cppfunc (result7=0xbfe04530, libp=0xbfdfe6b0,
ifunc=0x8e28ec0, ifn=0) at cint/cint/src/newlink.cxx:2516
#15 0x00c8b16c in G__interpret_func (result7=0xbfe04530,
funcname=0xbfe04130 “ServerInfo”, libp=0xbfdfe6b0, hash=1027,
p_ifunc=0x8e28ec0, funcmatch=1, memfunc_flag=1)
at cint/cint/src/ifunc.cxx:5265
#16 0x00c71a3c in G__getfunction (item=0xbfe07374 “ServerInfo()”,
known3=0xbfe0678c, memfunc_flag=1) at cint/cint/src/func.cxx:2534
#17 0x00d61a1b in G__getstructmem (store_var_type=112,
varname=0xbfe04780 “p\016ß”, membername=0xbfe07374 “ServerInfo()”,
tagname=0xbfe04990 “db”, known2=0xbfe0678c, varglobal=0xdffdc0, objptr=2)
at cint/cint/src/var.cxx:6624
#18 0x00d55b0a in G__getvariable (item=0xbfe07370 “db->ServerInfo()”,
known=0xbfe0678c, varglobal=0xdffdc0, varlocal=0x0)
at cint/cint/src/var.cxx:5253
#19 0x00c65689 in G__getitem (item=0xbfe07370 “db->ServerInfo()”)
at cint/cint/src/expr.cxx:1884
#20 0x00c5c969 in G__getexpr (
expression=0xbfe08bd0 “std::cout<< db->ServerInfo()<< std::endl”)
at cint/cint/src/expr.cxx:1288
#21 0x00cdbc2c in G__exec_statement (mparen=0xbfe09060)
at cint/cint/src/parse.cxx:6608
#22 0x00c41db0 in G__exec_tempfile_core (file=0x0, fp=0x8eab398)
at cint/cint/src/debug.cxx:251
#23 0x00c432f0 in G__exec_tempfile_fp (fp=0x8eab398)
at cint/cint/src/debug.cxx:791
#24 0x00ce809a in G__process_cmd (
line=0x8eb7638 “std::cout << db->ServerInfo() << std::endl;”,
prompt=0x8c23214 “”, more=0x8c2320c, err=0xbfe126cc, rslt=0xbfe126d0)
at cint/cint/src/pause.cxx:3236
#25 0x0071ac60 in TCint::ProcessLine (this=0x8c231f0,
line=0x8eb7638 “std::cout << db->ServerInfo() << std::endl;”, error=0x0)
at core/meta/src/TCint.cxx:420
#26 0x00623a0f in TApplication::ProcessLine (this=0x8c45998,
line=0x8eb7638 “std::cout << db->ServerInfo() << std::endl;”, sync=false,
err=0x0) at core/base/src/TApplication.cxx:820
#27 0x0029988e in TRint::HandleTermInput (this=0x8c45998)
at core/rint/src/TRint.cxx:514
#28 0x00297752 in TTermInputHandler::Notify (this=0x8dffea8)
at core/rint/src/TRint.cxx:123
#29 0x0029a670 in TTermInputHandler::ReadNotify (this=0x8dffea8)
at core/rint/src/TRint.cxx:115
#30 0x0072e316 in TUnixSystem::CheckDescriptors (this=0x8c20918)
at core/unix/src/TUnixSystem.cxx:1190
#31 0x0072d704 in TUnixSystem::DispatchOneEvent (this=0x8c20918,
pendingOnly=false) at core/unix/src/TUnixSystem.cxx:897
#32 0x00694286 in TSystem::InnerLoop (this=0x8c20918)
at core/base/src/TSystem.cxx:391
#33 0x00694054 in TSystem::Run (this=0x8c20918)
at core/base/src/TSystem.cxx:341
#34 0x006244a6 in TApplication::Run (this=0x8c45998, retrn=false)
at core/base/src/TApplication.cxx:959
#35 0x0029911a in TRint::Run (this=0x8c45998, retrn=false)
at core/rint/src/TRint.cxx:386
#36 0x08048de3 in main (argc=1, argv=0xbfe14bb4) at main/src/rmain.cxx:29
(gdb) q
The program is running. Exit anyway? (y or n)

Hi, William

Can you check that ROOT uses correct Oracle libraries? Just type:

ldd $ROOTSYS/lib/

You should see which and libraries are used. For you configuration they should be from /opt/wbm/programs/oracle_client/ directory. If not, put this path in front of LD_LIBRARY_PATH variable:

export LD_LIBRARY_PATH=/opt/wbm/programs/oracle_client/$LD_LIBRARY_PATH


I checked , and found that it was using
some oracle libraries in /usr/lib. Shouldn’t the
–with-oracle-libdir qualifier have overridden that?

Anyhow, with LD_LIBRARY_PATH explicitly pointing
to the correct oracle library area, I have rebuilt the root libraries,
and “ldd” look correct. However, I am still
getting the same crash as above.

Hi, William

Are you sure your that correct LD_LIBRAY_PATH configured when you start your script? Can it be, that some other oracle libs missing in your local directory and taken from /usr/lib? Your problem looks really like library mismatch.