JBoss is not able to fetch the password added to vault without restarting the server.

Issue

• Getting the following exception when jboss try to fetch the password added to vault without restarting the server :

Caused by: java.lang.IllegalArgumentException: Null input buffer
    at javax.crypto.Cipher.doFinal(DashoA13*..) [jce.jar:1.6]
    at org.picketbox.util.EncryptionUtil.decrypt(EncryptionUtil.java:134) [picketbox-4.0.19.SP2-redhat-1.jar:4.0.19.SP2-redhat-1]
    at org.picketbox.plugins.vault.PicketBoxSecurityVault.retrieve(PicketBoxSecurityVault.java:275) [picketbox-4.0.19.SP2-redhat-1.jar:4.0.19.SP2-redhat-1]
    ... 34 more

• Getting java.lang.SecurityException JBAS013311 Security Exception when vault is used.
• Is reload of server required when value masked with vault is used in JBoss EAP 6 ?
• Datasources taking vault configuration has been problematic.
• Encrypting Values for System Properties. I attempted to follow the instructions from https://access.redhat.com/solutions/348193 However, after adding the password to the vault JBoss EAP 6.4.1 throws an error :

"outcome" => "failed",
    "failure-description" => "JBAS014749: Operation handler failed: java.lang.SecurityException: JBAS013311: Security Exception",
    "rolled-back" => true

• Are the password refreshed without stopping the instances?
• How should we proceed when we have instances of a cluster in standalone mode to update a password without impacting?
• How should we proceed when we have instances of a cluster in domain mode to update a password without impacting? will domain controller update vault store in all instances?