Oracle Faq (Oracle version)

If you want to reprint Oracle, please specify the source, thank you!
Take 8.1.7.4.0 as an example to illustrate:
8: Version number
1: New feature version number
7: Maintenance Version number
4: The normal patch set number
0: Special platform Patch Set number

Additional questions regarding Oracle as 32bit/64bit are described below:
In the Windows/linux system because the operating system is 32bit, Oracle is certainly 32bit;
Oracle must be 64bit in Tru64;
In the Hpux/aix/solaris to see the specific situation, if it is 64bit on the server to start Sqlplus will display 64bit words, you can also pass
SELECT * from V$version; or $ file $ORACLE _home/bin/oracle|more to view, such as:
/data1/app/oracle/product/8.1.7/bin/oracle:elf-64 Executable Object File-
Pa-risc 2.0 (LP64)

If you want to support a SGA larger than 1.75GB, it is recommended that you use 64Bit Oracle. 32bit Oracle has the size of the SGA limit, although many platforms have a way around the past, allowing you to open the larger, after all, the direct use of 64Bit convenient, and even around the past, still can not open a lot. The other difference is not big.