Find below all the work-around for your problem:
1. Create a temporary directory on your server.
2. Copy the entire contents of the Oracle RDBMS Server CD to the temporary directory created in step 1.
3. Search the directory structure created in Step 1 for the existence of the filename symcjit.dll.
4. Rename each copy of the symcjit.dll to symcjit.old.
5. Run the setup.exe from the install\win32 directory (under the directory on your hard disk used in Step 1) and install Oracle 8.1.x and related products.
Workaround 2: If you continue to experience any of the symptoms after performing Workaround 1, follow these steps:
1. Copy the contents of the \install directory on your CD-ROM to a temporary directory on your hard disk.
2. Search for all copies of the 'symcjit.dll' file both in and under the directory from Step 1, and rename them to 'symcjit.old'.
3. Navigate to the directory you created in Step 1, and open the 'oraparam.ini' file for editing. Please note this file is write-protected, and the properties of the file must be changed to allow writing before editing.
4. Change the JRE_MEMORY_OPTIONS parameter to JRE_MEMORY_OPTIONS=-nojit -ms64m -mx128m
5. Save the oraparam.ini file.
6. Navigate to the win32 subdirectory, under the directory you usedin Step 1, and run the setup.exe program. If you have tried
Workarounds 1 and 2 and still experience problems, please do the following:
1. Navigate to: Start> Settings > Control Panel > System
2. Select the "Advanced" tab
3. Click the "Environment Variables" button
4. Highlight the PATH entry and click "Edit..."
5. Copy down the current PATH setting.
6. Remove any entries that refer to previous JRE directories
Note: Care should be taken when editing the system path. Incorrect edits can prevent Windows or other applications from starting properly.
7. If any entries were removed, repeat Workaround 1 or 2.