IMPORTANT: In the following instructions, we use Java SE Runtime version 1.8.0_151 as an example. For security purposes, Technical Support recommends that you use a build version earlier than 1.8.0_171 because of cipher suite deprecation that occurs in that version.

NOTE: These steps are unnecessary for Database Security 4.6.4 and later, which come packaged with Java 8.

Microsoft Windows:

1. Download and install the 64-bit Java SE Runtime 8, which is available from the Oracle website.
2. Stop the Database Security service.
3. Navigate to the server install directory.
   
   NOTE: The default location is C:\Program Files\McAfee\McAfee Database Security\bin.
    
4. Run McAfeeDBSw.exe with Administrator rights. This action opens the Database Security Properties window.
    
5. Click the Java tab and edit the JVM entry so the entry points to the server\jvm.dll file, installed with the JRE.
   For example, C:\Program Files\Java\jre1.8.0_151\jre\bin\server\jvm.dll
   
   NOTE: For production systems, Technical Support recommends that you increase the JVM memory to 4 GB (or greater) by modifying the values in the Java Options section:
   
   -Xms4096m
   -Xmx4096m
    
6. Save your changes. Click OK.
    
7. Start the Database Security service.

Linux:

1. Download and install the 64-bit Java SE Runtime 8 available from the Oracle website.
   
   NOTE: Technical Support recommends that you install the tar.gz distribution in a dedicated directory such as /opt.
    
2. Modify the file <install-dir>/conf/server-custom.properties:
   
   Specify the JRE_HOME using this syntax, JRE_HOME=<jre dir>
   For example, JRE_HOME=/opt/jre1.8.0_151/jre
   
   NOTE: For production systems, Technical Support recommends that you increase the JVM memory to 4 GB or greater by modifying the setting in <install-dir>/conf/server-custom.properties:
   
   JAVA_MIN_MEM=4096m
   JAVA_MAX_MEM=4096m
    
3. Restart the Database Security Server process. 

Verify the update:
View the log file mfe_dbs.log located in <install dir>/logs and search for the line with the following text:

java version is: <java version>

For example, java version is: 1.8.0_151