I have created the binary for the following program in RHEL5 i386 (32 bit) OS.

#include <iostream>
#include <rpm/rpmlib.h>
#include <rpm/rpmdb.h>

static rpmdb rpmDB;

int main(void)
{

rpmReadConfigFiles(NULL, NULL);
if(rpmdbOpen("", &rpmDB, RD_ONLY, 0644) != 0)
{
std::cout("not Working fine");
}
else
{
std::cout("working fine");
rpmdbClose(rpmDB);
}
return 0;
}

I used the following command to create the binary.

#gcc -o rpmtest rpmtest.cpp -L/usr/lib/rpm -lrpm -lrpmio -lrpmdb

I have copied the binary (rpmtest) to RHEL5 x86_64 (64 bit) machine.

I executed the rpmtest binary using following command.
#./rpmtest
It works fine.

After that I executed the following command.
rpm -q rpm
The problem is here. It's giving the following errors.

rpmdb: program version 4.3 does not match environment version.
error: db4 error (30974) from dbenv -> open: DB_VERSION_MISMATCH: Database environment version mismatch.
Error: can not open packages index using db3 (30974).
error: can not open packages database in /var/lib/rpm
package rpm is not installed.

So I googled more and found workaround that removing the rpm temp files and --rebuilddb will help in this. But it did not help me.

After deleting the temp (var/lib/rpm/__db*) files, I was able to run the rpm query(rpm -q rpm) without errors and the temp files created again. But this time I was not able run my program. It was giving above mentioned errors.

If the temp files created while running the program, I am not able to run the rpm commands. If the temp files created while running the rpm command, I am not able to run my program.

Could you help me in this?

Perhaps I'm missing something but you took a 32-bit compiled app and put it on a 64-bit machine and wonder why it no longer works???

Try compiling the app on thr 64-bit machine and see what happens.

Stuart.

If i compiled it in 64 bit machine, it's working fine.

But my requirement is that I have to compile my application in 32 bit only, becase of some other dependencies. The above code is part of my application. But application is failing with the above mentioned errors, when it's trying to call the rpmdbOpen function.

Hi,

There 'might' be a compilation switch which tells the app it should be capable of running on 32 & 64-bit arch.

It's also possible that moving a 32-bit to a 64-bit system that the library files are all screwed up. Have you checked the app using ldd?

Stu.

I checked with the ldd.

For 32 bit compilation, all the rpm libraries (.so) files linked to the /usr/lib folder. But 64 bit compilation, all the rpm libraris (.so) files linked to the /usr/lib64 folder.

chendra.

Thats to be expected, but you said you are taking your 32-bit app and putting it on a 64-bit machine, when you do this and run ldd, what do you get?

Sorry for the delay in repsonse. I was out of station from the last 5 days.

If I run the ldd onn 32 bit excutable, I am getting the following results:

[root@kumvi10-w2k3-1 Test]# ldd rpmtest32-2
linux-gate.so.1 => (0xffffe000)
librpm-4.4.so => /usr/lib/librpm-4.4.so (0xf7f56000)
librpmio-4.4.so => /usr/lib/librpmio-4.4.so (0xf7ec0000)
librpmdb-4.4.so => /usr/lib/librpmdb-4.4.so (0xf7dab000)
libc.so.6 => /lib/libc.so.6 (0x4161e000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x4204d000)
libpopt.so.0 => /usr/lib/libpopt.so.0 (0x4214c000)
libselinux.so.1 => /lib/libselinux.so.1 (0x42623000)
libbeecrypt.so.6 => /usr/lib/libbeecrypt.so.6 (0xf7d6c000)
libm.so.6 => /lib/libm.so.6 (0x41776000)
libdl.so.2 => /lib/libdl.so.2 (0x4188b000)
libz.so.1 => /usr/lib/libz.so.1 (0x41eec000)
librt.so.1 => /lib/librt.so.1 (0x41880000)
libpthread.so.0 => /lib/libpthread.so.0 (0x4175d000)
libbz2.so.1 => /usr/lib/libbz2.so.1 (0xf7d5a000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x4213a000)
libsqlite3.so.0 => /usr/lib/libsqlite3.so.0 (0xf7cfb000)
libelf.so.1 => /usr/lib/libelf.so.1 (0xf7ce5000)
/lib/ld-linux.so.2 (0x41601000)
libsepol.so.1 => /lib/libsepol.so.1 (0x423a7000)
[root@kumvi10-w2k3-1 Test]#

I compiled my program in 64 bit OS with -m32 option. Even I am getting same problem.
Please any body help me in this?