Issues and Solutions for Oracle 19c Grid Infrastructure Installation

  
 Common Issues and Solutions for Oracle 19c Grid Infrastructure Installation
•      Check Log Files for Details Oracle installation issues often provide valuable clues in the log files. If the installer seems stuck or fails, check the following logs: ▪ Install log: /u01/app/oraInventory/logs/installActions<date>.log
•      ▪ Grid Infrastructure log: $ORACLE_BASE/cfgtoollogs/
•       
•      These logs can provide error messages and help identify the exact issue.
•       
•       Check Permissions and Ownership Verify that the Oracle Grid Infrastructure installation directories have the correct ownership and permissions.
•       For example:
•       Make sure the grid user has permission to write to the directories where the installation is happening.
•       Ensure that your server has sufficient swap space and disk space. Oracle can sometimes fail silently if these requirements are not met.
•       Check the swap space with:
•       Check disk space with:
•        
 
bash
chown -R grid:oinstall /u01/app/19.0.0/grid
chmod -R 775 /u01/app/19.0.0/grid
1.      Verify Swap Space and Disk Space
 
bash
free -m
bash
df -h
•      Disable Firewall and SELinux Sometimes firewall or SELinux settings can cause issues during installation. Ensure that: ▪ Firewall: Disable or open the required ports for Oracle.
•      ▪ SELinux: Ensure SELinux is set to permissive or disabled:
•       
•       
 
bash
systemctl stop firewalld
systemctl disable firewalld
bash
setenforce 0
 
•      ▪ Also check /etc/selinux/config to ensure the line SELINUX=permissive or SELINUX=disabled.
•       
•      Even though you've checked the packages, run the following command to double-check that all required packages for Oracle 19c are present:
•      Additionally, verify that all dependencies listed in the Oracle documentation for your OS version are installed, especially libaio, binutils, gcc, etc.
•      Kernel parameters play a crucial role in Oracle installation. Check if all required kernel parameters have been set in /etc/sysctl.conf. You can reapply them with:
•      Example of key parameters:
•       
 
1.     Ensure Required Packages Are Installed
 
bash
yum install -y oracle-database-preinstall-19c
1.      Set Kernel Parameters Correctly
 
bash
sysctl -p
bash
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmax = 4398046511104
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.core.rmem_max = 4194304
net.core.wmem_max = 1048576
net.ipv4.ip_local_port_range = 9000 65500
net.ipv4.tcp_rmem = 4096 87380 4194304
net.ipv4.tcp_wmem = 4096 65536 4194304
         Check for Conflicting Processes Ensure that no other processes or previous Oracle installations are running that could cause conflicts. You can check for running Oracle-related processes with
         If any exist, kill them before attempting the installation again.
         If you continue facing issues, you can try running the installer with debug mode enabled to get more detailed output:
         This might give you more granular information about where the installer is getting stuck.
          
 
ps -ef | grep oracle
1.      Re-run the Installer with Debugging Enabled
 
bash
./runInstaller -debug
 
         Use a Response File in Silent Mode If the GUI is causing issues, use the silent mode with a response file. Make sure that the response file is properly configured, and there are no missing or incorrect parameters.
         For example, you can create a response file (named grid_install.rsp) and run:
          
 
bash
./gridSetup.sh -silent -responseFile /path/to/grid_install.rsp
1                Check X11 Display for GUI
                  If you’re stuck in GUI mode, ensure that the X11 forwarding is set up correctly for remote installations. For local installation:
                  For remote installation, use X11 forwarding:
                  If there are X11 issues, silent mode with a response file is a good fallback.
                   
 
bash
export DISPLAY=:0.0
bash
ssh -X user@host
1                Run the Prerequisite Check Manually
2               Before running the installer again, you can manually run the Oracle prerequisite check to ensure that all requirements are met:
 
bash
./gridSetup.sh -executePrereqs
•                This will give you a detailed report of any missing configurations or failed checks.