Hmm, i just tried to do the same thing (ppc64 sh, ...) but it seems to me that the result is a 32bit executable: [root@testxx pg803]# ldd bin/psql libpq.so.4 => /opt/learn-bench/pg803/lib/libpq.so.4 (0x0ff95000) libz.so.1 => /usr/lib/libz.so.1 (0x0fbf0000) libreadline.so.4 => /usr/lib/libreadline.so.4 (0x000e0000) libtermcap.so.2 => /lib/libtermcap.so.2 (0x0fc30000) libcrypt.so.1 => /lib/libcrypt.so.1 (0x00040000) libresolv.so.2 => /lib/libresolv.so.2 (0x0fa00000) libnsl.so.1 => /lib/libnsl.so.1 (0x00080000) libdl.so.2 => /lib/libdl.so.2 (0x0fe60000) libm.so.6 => /lib/tls/libm.so.6 (0x0fdd0000) libc.so.6 => /lib/tls/libc.so.6 (0xf7e97000) /lib/ld.so.1 (0x0ffd0000) [root@testxx pg803]# readelf -h bin/psql ELF Header: Magic: 7f 45 4c 46 01 02 01 00 00 00 00 00 00 00 00 00 Class: ELF32 Data: 2's complement, big endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: EXEC (Executable file) Machine: PowerPC When i compiled with the -m64 switch the result was an ELF64 file, and all of the library references were going to /lib64/ ... [root@testxx pg803]# ldd bin/psql libpq.so.4 => /opt/learn-bench/pg803/lib/libpq.so.4 (0x0000008000001000) libz.so.1 => /usr/lib64/libz.so.1 (0x000000802bcb0000) libreadline.so.4 => /usr/lib64/libreadline.so.4 (0x000000802bdb0000) libtermcap.so.2 => /lib64/libtermcap.so.2 (0x000000802bc80000) libcrypt.so.1 => /lib64/libcrypt.so.1 (0x0000008000052000) libresolv.so.2 => /lib64/libresolv.so.2 (0x000000802c200000) libnsl.so.1 => /lib64/libnsl.so.1 (0x000000802de20000) libdl.so.2 => /lib64/libdl.so.2 (0x000000802bc60000) libm.so.6 => /lib64/tls/libm.so.6 (0x000000802bbd0000) libc.so.6 => /lib64/tls/libc.so.6 (0x000000802ba40000) /lib64/ld64.so.1 (0x000000802ba00000) [root@testxx pg803]# readelf -h bin/psql ELF Header: Magic: 7f 45 4c 46 02 02 01 00 00 00 00 00 00 00 00 00 Class: ELF64 Data: 2's complement, big endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: EXEC (Executable file) Machine: PowerPC64 What elf-class did your compilation produce? Is my assumption, that it should be elf64 for a 64-bit executable correct? Regards, peter ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match