ORA-06521:PL/SQL:Error mapping function :ORA-06522:undefined :ODCIAggregate

Question

Hi,
I am getting the following error :
SQL> select MinDistance(TT) from egg1;
select MinDistance(TT) from egg1
ERROR at line 1:
ORA-06521: PL/SQL: Error mapping function
ORA-06522: /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib/custagg.so:
undefined symbol: ODCIAggregateInitialize
I am compiling my C program with OCI using the following command :
g++ -Wall -c custagg.c -o custagg.o -I$ORACLE_HOME/rdbms/public -I/usr/lib
I am linking to get a shared library custagg.so file with following command :
ld -shared -o custagg.so custagg.o $ORACLE_HOME/lib/l*.so ../../usr/lib/libstdc++.s*
I am not getting any errors during these two phases.
And when i am calling the extproc custagg(Mindistance) which i implemented using ODCI(oracle data catridge interface) ...I am getting the error undefined symbol : ODCIAggregateInitialize
So can any one please let me know what shared libraries are required to access the ODCI services and also am I compiling and linking it the right way or am I missing any libraries.
I have the oci.h & odci.h and several other header files in my :
$ORACLE_HOME/rdbms/public
And while linking i am using : $ORACLE_HOME/lib/*.so files.
So I don't know whether my directory is missing some shared files related to ODCI : can any one please let me know which files or shared libraries I am missing :
Below are list of files in my : $ORACLE_HOME/lib :
custagg123.o libclntsh.so libdbcfg10.so libjox10.so libocci.so.10.1 liborasdkbase.so libskgxpd.so libunwind.so.5
custagg.so libclntsh.so.10.1 libemmas10.so libldapjclnt10.so libocijdbc10.so liborasdkbase.so.10.2 libskgxpu.so libxdb.so
facility.lis libclsra10.so libhasgen10.so libnjni10.so libocr10.so liborasdk.so libsqlplus.so shell.so
hsdb_odbc.so libcorejava.so libheteroxa10.so libnjssl10.so libocrb10.so liborasdk.so.10.2 libsqora.so.10.1 sysliblist
hsdb_ora.so libcoresh10.so libhsbase.so libnnz10.so libocrutl10.so libqsmashr.so libsrvm10.so
lclasses12.zip libcprts.so.5 libhsnav.so libnque10.so libodm10.so libskgxn2.so libsrvmhas10.so
libagtsh.so libcxa.so.3 libimf.so libntcpaio10.so libodmd10.so libskgxns.so libsrvmocr10.so
libagtsh.so.1.0 libcxa.so.5 libirc.a libocci.so libons.so libskgxp10.so libuini10.so
Please reply to my queries.
Please let me know if you want to have a look at the symbols of my object file
Thanks & Regards,
-NN

Answer 1

It's only a quick guess but have you checked your tnsnames.ora file to ensure you've opened the environment to find the libraries? If you set the EXTPROC_DLLS=ANY, you open the database to security issues but it should tell you if this cause because you can't access the library that contains the symbol.
SID_LIST_CALLOUT_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = <oracle_home_directory>)
(PROGRAM = extproc)
(ENV = "EXTPROC_DLLS=ONLY:
<oracle_home_directory>/customlib/writestr1.so
,LD_LIBRARY_PATH=<oracle_home_directory>/lib")
)