Oracle数据库服务器搭建
本文介绍Oracle数据库服务器搭建，OS版本：Red Hat Enterprise Linux Server release 4/5。为了追求更高的性能，稳定性及经济性越
本文介绍Oracle数据库服务器搭建，OS版本：Red Hat Enterprise Linux Server release 4/5。为了追求更高的性能，稳定性及经济性越来越多的公司将自己的数据库服务器迁移到Linux平台，结合自己公司的环境编写以下文档供大家参考，如有不当之处请指出。
在安装OS之前一般需要做RAID，至于是做RAID5还是RAID1+0则根据自己的需求在I/O性能及安全性上衡量。在选择安装包的时候我一般不主张完全安装，毕竟我们的服务器资源还是很珍贵的，没有必要的服务可以不用装。我们可以按最小化安装，以后再根据需要补充安装。当然如果能确定需求的话直接选择自己需要的包来安装是最好的。
一. Linux磁盘划分：
1. 对于内置2块磁盘（146G）的系统，/ 目录 20GB，SWAP 与内存大小相当（内存8GB以下的机器SWAP配置8GB），/boot 100MB。作为数据库平台，建立/dba文件系统20GB作为数据库软件目录；其余的磁盘空间分配给/u01文件系统，作为存放数据文件的目录。
2. 对于内置4-6块的磁盘系统，/ 目录 40GB，SWAP 与内存大小相当（内存8GB以下的机器SWAP配置8GB），/boot 100MB。作为数据库平台，建立/dba文件系统40GB作为数据库软件目录；其余的磁盘空间分配给/u01文件系统，作为存放数据文件的目录。
3. 对于Oracle数据文件目录文件系统使用mke2fs -j -T largefiles命令建立。
二. Oracle目录标准（建议）：
1. 对于无外接存储情况下Oracle目录标准（建议）：ORACLE_HOME=/dba/app/oracle/product/10.2.0.4（根据实际版本指定）；ORACLE_BASE=/dba（dump目录为/dba/admin/sid）；Datafile目录为/u01/oradata/sid；Archive目录为/u01/oradata/archive_sid
2. 对于有外接存储（/u02）情况下Oracle目录标准（建议）：ORACLE_HOME=/dba/app/oracle/product/10.2.0.4（根据实际版本指定）；ORACLE_BASE=/u01（dump目录为/u01/admin/sid）；Datafile目录为/u02/oradata/sid；Archive目录为/u01/oradata/archive_sid
3. Oracle建库采用CUSTOMER方式，直接更改初始UNDO和TEMP表空间为8GB（或4GB，也可以通过增加数据文件数目到更大，，根据实际的业务需求）；SYSTEM表空间为512MB（或者1GB）；Redolog为100MB；单个的Datafile大小8GB为宜（ext3文件系统的特性使然，其他文件系统则根据其特性自行设置），Datafile的大小一次性划分到8G最好，不建议使用自扩展。
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