4种包的介绍：

***_database_*.zip
是oracle数据库 服务端 软件的安装包，如果你要创建一个数据库，请下载这个版本

***_client_*.zip
是oracle数据库 客户端 软件的安装包，如果你不需要创建数据库，只是用来操作远程电脑上的数据库时，请下载这个版本

***_gateways_*.zip
oracle透明网关，如果你要链接其他数据库，请下载这个软件包

***_clusterware_*.zip
oracle集群软件，如果你要做RAC，请下载这个软件包

Oracle Database 10g Release 2 (10.2.0.1.0) Enterprise/Standard Edition for Linux x86
http://download.oracle.com/otn/linux/oracle10g/10201/10201_database_linux32.zip
http://download.oracle.com/otn/linux/oracle10g/10201/10201_client_linux32.zip
http://download.oracle.com/otn/linux/oracle10g/10201/10201_clusterware_linux32.zip
http://download.oracle.com/otn/linux/oracle10g/10201/10201_gateways_linux32.zip

Oracle Database 10g Release 2 (10.2.0.1.0) Enterprise/Standard Edition for Linux x86-64
http://download.oracle.com/otn/linux/oracle10g/10201/10201_database_linux_x86_64.cpio.gz
http://download.oracle.com/otn/linux/oracle10g/10201/10201_client_linux_x86_64.cpio.gz
http://download.oracle.com/otn/linux/oracle10g/10201/10201_clusterware_linux_x86_64.cpio.gz
http://download.oracle.com/otn/linux/oracle10g/10201/10201_gateways_linux_x86_64.cpio.gz

Oracle Database 10g Release 2 (10.2.0.1.0) Enterprise/Standard Edition for Microsoft Windows (32-bit)
http://download.oracle.com/otn/nt/oracle10g/10201/10201_database_win32.zip
http://download.oracle.com/otn/nt/oracle10g/10201/10201_client_win32.zip
http://download.oracle.com/otn/nt/oracle10g/10201/10201_clusterware_win32.zip
http://download.oracle.com/otn/nt/oracle10g/10201/10201_gateways_win32.zip

Oracle Database 10g Release 2 (10.2.0.1.0) Enterprise/Standard Edition for Microsoft Windows (x64)
http://download.oracle.com/otn/nt/oracle10g/10201/102010_win64_x64_database.zip
http://download.oracle.com/otn/nt/oracle10g/10201/102010_win64_x64_client.zip
http://download.oracle.com/otn/nt/oracle10g/10201/102010_win64_x64_clusterware.zip

如果是win7 64位,可能下载上面的版本还是无法安装，需要下载下面的这个版本:
http://download.oracle.com/otn/nt/oracle10g/10204/10204_vista_w2k8_x64_production_db.zip

Oracle Database 10g Release 2 (10.2.0.1.0) Enterprise/Standard Edition for AIX5L
http://download.oracle.com/otn/aix/oracle10g/10201/10gr2_aix5l64_database.cpio.gz
http://download.oracle.com/otn/aix/oracle10g/10201/10gr2_aix5l64_client.cpio.gz
http://download.oracle.com/otn/aix/oracle10g/10201/10gr2_aix5l64_cluster.cpio.gz
http://download.oracle.com/otn/aix/oracle10g/10201/10gr2_aix5l64_gateways.cpio.gz

Oracle Database 10g Release 2 (10.2.0.2) Enterprise/Standard Edition for Solaris Operating System (x86)
http://download.oracle.com/otn/solaris/oracle10g/10202/10202_database_solx86.zip
http://download.oracle.com/otn/solaris/oracle10g/10202/10202_client_solx86.zip
http://download.oracle.com/otn/solaris/oracle10g/10202/10202_clusterware_solx86.zip

Oracle Database 10g Release 2 (10.2.0.1.0) Enterprise/Standard Edition for Solaris Operating System (x86-64)
http://download.oracle.com/otn/solaris/oracle10g/10201/x8664/10201_database_solx86_64.zip
http://download.oracle.com/otn/solaris/oracle10g/10201/x8664/10201_client_solx86_64.zip
http://download.oracle.com/otn/solaris/oracle10g/10201/x8664/10201_clusterware_solx86_64.zip