diff -up ext/pdo_oci/config.m4.remi-oci8 ext/pdo_oci/config.m4
--- ext/pdo_oci/config.m4.remi-oci8	2008-10-22 22:35:52.000000000 +0200
+++ ext/pdo_oci/config.m4	2008-12-13 16:25:25.000000000 +0100
@@ -74,7 +74,10 @@ You need to tell me where to find your O
     PDO_OCI_IC_PREFIX="`echo $PDO_OCI_DIR | cut -d, -f2`"
     PDO_OCI_IC_VERS="`echo $PDO_OCI_DIR | cut -d, -f3`"
     AC_MSG_CHECKING([for oci.h])
-    if test -f $PDO_OCI_IC_PREFIX/include/oracle/$PDO_OCI_IC_VERS/client/oci.h ; then
+    if test -f $PDO_OCI_IC_PREFIX/include/oracle/$PDO_OCI_IC_VERS/client64/oci.h ; then
+      PHP_ADD_INCLUDE($PDO_OCI_IC_PREFIX/include/oracle/$PDO_OCI_IC_VERS/client64)
+      AC_MSG_RESULT($PDO_OCI_IC_PREFIX/include/oracle/$PDO_OCI_IC_VERS/client64)
+    elif test -f $PDO_OCI_IC_PREFIX/include/oracle/$PDO_OCI_IC_VERS/client/oci.h ; then
       PHP_ADD_INCLUDE($PDO_OCI_IC_PREFIX/include/oracle/$PDO_OCI_IC_VERS/client)
       AC_MSG_RESULT($PDO_OCI_IC_PREFIX/include/oracle/$PDO_OCI_IC_VERS/client)
     elif test -f $PDO_OCI_IC_PREFIX/lib/oracle/$PDO_OCI_IC_VERS/client/include/oci.h ; then
@@ -91,6 +94,10 @@ You need to tell me where to find your O
     fi
     if test -f "$PDO_OCI_IC_PREFIX/lib/oracle/$PDO_OCI_IC_VERS/client/lib/libclntsh.so" ; then
     PDO_OCI_LIB_DIR="$PDO_OCI_IC_PREFIX/lib/oracle/$PDO_OCI_IC_VERS/client/lib"
+    elif test -f "$PDO_OCI_IC_PREFIX/lib64/oracle/$PDO_OCI_IC_VERS/client64/lib/libclntsh.so" ; then
+      PDO_OCI_LIB_DIR="$PDO_OCI_IC_PREFIX/lib64/oracle/$PDO_OCI_IC_VERS/client64/lib"
+    elif test -f "$PDO_OCI_IC_PREFIX/lib64/oracle/$PDO_OCI_IC_VERS/client/lib/libclntsh.so" ; then
+      PDO_OCI_LIB_DIR="$PDO_OCI_IC_PREFIX/lib64/oracle/$PDO_OCI_IC_VERS/client/lib"
     elif test -f "$PDO_OCI_IC_PREFIX/client/lib/libclntsh.so" ; then
       PDO_OCI_LIB_DIR="$PDO_OCI_IC_PREFIX/client/lib"
     elif test -f "$PDO_OCI_IC_PREFIX/libclntsh.so" ; then
--- ext/oci8/config.m4.remi-oci8	2009-03-13 00:52:37.000000000 +0100
+++ ext/oci8/config.m4	2009-03-24 20:42:39.000000000 +0100
@@ -306,6 +306,7 @@
 
     dnl Header directory for Instant Client SDK RPM install
     OCISDKRPMINC=`echo "$PHP_OCI8_INSTANT_CLIENT" | $PHP_OCI8_SED -e 's!^/usr/lib/oracle/\(.*\)/client\('${PHP_OCI8_IC_LIBDIR_SUFFIX}'\)*/lib[/]*$!/usr/include/oracle/\1/client\2!'`
+    OCISDKRPMINC=`echo "$PHP_OCI8_INSTANT_CLIENT" | $PHP_OCI8_SED -e 's!^/usr/\(lib64\|lib\)/oracle/\(.*\)/\(client64\|client\)/lib[/]*$!/usr/include/oracle/\2/\3!'`
 
     dnl Header directory for Instant Client SDK zip file install
     OCISDKZIPINC=$PHP_OCI8_INSTANT_CLIENT/sdk/include