Performing Prerequisite Tasks for Installing Oracle Database

To ensure that your platform meets the minimum requirements for installing Oracle Database 12c Release 2 (12.1.0.2) or 19c (19.3.0.0), you must perform the following preparatory tasks:

• Create Owners, Groups, and Mount Points
  
• Configure Kernel Resources and Adjust Operating System Environment
  
• Test the C Compiler Installation
  
• Install Latest Operating System Patches
  

Create Owners, Groups, and Mount Points

To create the software owner, required groups, and mount points:

1. Create the software owner and groups:
   • Create a UNIX user to own the Oracle software. Typically, the user name is oracle.
   • Create two groups: one is the Oracle Inventory group; the other is the operating system DBA group. Typically, the group names are oinstall and dba, respectively.
2. Create mount points owned by the oracle user:
   • Create a software mount point of at least 10 GB.
   • Create mount points to hold the database files, control files, and log files, respectively.
3. Test permissions. Ensure that the oracle user can write to the new mount points and all subdirectories.

Configure Kernel Resources and Adjust Operating System Environment

The performance of Oracle Database relies on proper tuning of operating system parameters. In addition, if you are creating several Oracle instances, you might have to increase the amount of shared memory and semaphores on the system by setting kernel parameters.

Test the C Compiler Installation

To test that the correct C compiler is installed and that it is accessible:

1. Log in to the database server as the opapps user.
2. Test for the C compiler type:
   ls -l `which cc`

   where the ` symbols that wrap the command are single back quotes.

3. Compare your results to the correct responses listed in the following table:

   Table 2-1 Responses to the 'which cc' Command

   Operating System	Response	Symbolically Links To
   Oracle Linux x86-64	/usr/bin/gcc	(Not applicable)
   Oracle Solaris SPARC	/opt/SUNWspro/bin/cc	../prod/bin/cc

4. Test that the make command is accessible:

   ls -l `which make`

   where the ` symbols that wrap the command are single back quotes.

5. Compare your results to the correct responses listed in the following table:

Table 2-2 Responses to the 'which make' Command

Operating System	Response	Symbolically Links To
Oracle Linux x86-64	/usr/bin/make	(Not applicable)
Oracle Solaris SPARC	/usr/ccs/bin/make	(Not applicable)

Install Latest Operating System Patches

Download and install the latest operating system patches required for Oracle, if necessary. Review the latest platform-specific install bulletins for Oracle Database 12c Release 2 (12.1.0.2) or 19c (19.3.0.0).