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Many Adobe applications depend on the Oracle Java Runtime Environment (JRE) for some features to work. Apple recently changed the way it includes Java in Mac OS, and with Lion, Java is no longer preinstalled. It is now an optional install that you must select. The following steps show you how to install a non-notarized JDK or JRE. Note: These steps use the JDK 8u231 macOS installer as an example. These steps apply equally to all other JDK and JRE releases. Installing the JDK Using a.dmg File. Double-click on the.dmg file to begin the installation.

  • All Implemented Interfaces:
    Cloneable

    This class provides the functionality of a 'Message Authentication Code' (MAC) algorithm.

    A MAC provides a way to check the integrity of information transmitted over or stored in an unreliable medium, based on a secret key. Typically, message authentication codes are used between two parties that share a secret key in order to validate information transmitted between these parties.

    A MAC mechanism that is based on cryptographic hash functions is referred to as HMAC. HMAC can be used with any cryptographic hash function, e.g., MD5 or SHA-1, in combination with a secret shared key. HMAC is specified in RFC 2104.

    Every implementation of the Java platform is required to support the following standard Mac algorithms:

    • HmacMD5
    • HmacSHA1
    • HmacSHA256
    These algorithms are described in the Mac section of the Java Security Standard Algorithm Names Specification. Consult the release documentation for your implementation to see if any other algorithms are supported.
    Since:
    1.4
Home / Middleware / Oracle GoldenGate for Windows and UNIX
  1. One of the functions of Java Preferences was to set the current version of the JRE. Under Oracle Java, only a single version of the JRE can be installed at a time. See Installing the JRE on macOS. To access the Java Control Panel, in the System Preferences panel, click the Java icon.
  2. It provides an Ant task that will package your application up as a normal Mac.app bundle, and can optionally include an embedded JRE. The whole Java landscape on Mac is a bit of a mess at the moment as we're still in the transitional period where Java 6 releases are supplied and maintained by Apple and Java 7 releases come direct from Oracle.

The Oracle GoldenGate Director software and installer both rely on components in the Java Runtime Environment (JRE). In many cases, this environment already exists because it was installed when the system was configured or when another program was installed. If the system where you are installing the server or client components does not have this environment, follow these instructions to download the JRE and verify the JRE environment on UNIX and Windows systems to support Oracle GoldenGate Director.

Note:

See System Requirements for the supported JRE versions.

Downloading the Java Runtime Environment

You can download the JRE free of charge from Oracle.

  1. Go to http://www.oracle.com/technetwork/java/javase/downloads/index.html.

  2. Under Java Platform, Standard Edition, select either the current release, or click Previous Releases to install an earlier supported version. You can use either the JDK or JRE. The JDK includes the JRE. Do not use any non-supported version or edition of the Java JRE or JDK.

  3. Follow the navigation aids to download the JRE or JDK that is appropriate for your operating system.

  4. Follow the installation instructions that are provided with the JRE.

  5. Save the path to the JRE executable file. You will need it later.

  6. Proceed to the instructions in Verifying the JRE Environment.

Verifying the JRE Environment

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This section contains instructions for verifying the JRE environment on UNIX and Windows platforms.

Verifying the JRE on UNIX

After installing the JRE, run the following test to verify the version of Java that is recognized by the system.

  1. From the command shell of the operating system, issue the following command.

  2. Make certain the command output shows the version that you downloaded.

Verifying the JRE on Windows

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After installing the JRE, but before installing Oracle GoldenGate Director Server, verify the path to the JRE by completing the following tasks:

Java

Verify the JRE Version

These steps verify the JRE version that is installed on the server machine.

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Jre

  1. On the keyboard, press the Win (Windows) key and the R key simultaneously to open the Run box. Alternatively, you can select Start, then Run.

  2. In the Run box, type cmd to run the Windows command console.

  3. Issue the following command:

  4. Do one of the following:

    • If the results show the JRE cversion that you installed, continue to the instructions in Installing Oracle GoldenGate Director Server.

    • If the results do not show that version, close the command console and continue with the steps in Set the JAVA_HOME System Variable.

Set the JAVA_HOME System Variable

These steps verify that the JAVA_HOME system environment variable points to the JRE that you installed, or creates the variable if absent.

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  1. On the desktop (Windows 2000) or in the Start menu (Windows XP), right-click My Computer and then click Properties.

  2. Click the Advanced tab, and then click Environment Variables.

  3. Under System Variables, look for the JAVA_HOME system variable. The JAVA_HOME path should point to the location that you recorded when you installed the JRE.

  4. Do one of the following:

    • If you see the JAVA_HOME system variable and it points to the correct location, leave the Environment Variables dialog box open and follow the instructions in Set the JAVA_HOME System Path.

    • If a JAVA_HOME system variable does not exist, or if it points to the wrong location, continue to the next step.

  5. Under System Variables, do one of the following:

    • Click New to create a JAVA_HOME variable.

    • Select the existing JAVA_HOME variable and then click Edit. This opens a dialog box to edit this variable.

  6. In the Variable Name box, type JAVA_HOME in capital letters.

  7. In the Variable Value box, type the correct path to the JRE.

  8. Click OK to set the path and close the dialog box.

  9. Leave the Environment Variables dialog box open and follow the instructions in Set the JAVA_HOME System Path.

Set the JAVA_HOME System Path

These steps ensure that the JAVA_HOME path is in the expected location within the Path system variable. Programs such as the Oracle database software place the path to their own JRE installations in the location that is expected by Oracle GoldenGate Director Server.

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  1. In the Environment Variables dialog box, look for the Path variable under System Variables.

  2. Confirm that the path to JAVA_HOME appears as the first path in the list of paths.

  3. Do one of the following:

    • If this JAVA_HOME path is the first path in the string, close the Environment Variables and System Properties dialog boxes and follow the instructions in Installing Oracle GoldenGate Director Server.

    • If this JAVA_HOME path is not the first path in the string, continue to the next step.

  4. Under System Variables, double click the Path variable to open it for editing.

  5. In the path string, locate the JAVA_HOME path. If it is there, cut and paste it (including the terminating semi-colon) to the front of the list; otherwise, type it. The path must be entered as %JAVA_HOME%bin.

  6. Click OK to close the Edit System Variable dialog box.

  7. Close the Environment Variables and System Properties dialog boxes.