How to Unlock a User Account in Linux?

Some times on Linux boxes the user account will be locked due to issues such as wrong password entry, account expiry etc. 

In this post I will show how to unlock user account with different commands.

Example 1: Check if the password is disabled by viewing /etc/shadow file for user entry.

   $ grep ‘username’ /etc/shadow

If you are able to see ! in the second field starting that indicates that password is disabled, you have to enable it back by using passwd with -u option

  $passwd -u username

Example:

   passwd -u mani

Unlocking password for user mani.

passwd: Success

Hope this post helps you to resolve this issue.

Thank you for reading out my blog!!

java.security.AccessControlException: access denied ("oracle.security.jps.service.credstore.CredentialAccessPermission" "context=SYSTEM,mapName=oim,keyName=OIMSchemaPassword" "read")

Issue:

java.security.AccessControlException: access denied ("oracle.security.jps.service.credstore.CredentialAccessPermission" "context=SYSTEM,mapName=oim,keyName=OIMSchemaPassword" "read")

        at java.security.AccessControlContext.checkPermission(AccessControlContext.java:366)

        at java.security.AccessController.checkPermission(AccessController.java:560)

        at oracle.security.jps.util.JpsAuth$AuthorizationMechanism$3.checkPermission(JpsAuth.java:458)

        at oracle.security.jps.util.JpsAuth.checkPermission(JpsAuth.java:518)

        at oracle.security.jps.util.JpsAuth.checkPermission(JpsAuth.java:544)

        Truncated. see log file for complete stacktrace

Caused By: java.security.AccessControlException: access denied ("oracle.security.jps.service.credstore.CredentialAccessPermission" "context=SYSTEM,mapName=oim,keyName=OIMSchemaPassword" "read")

        at java.security.AccessControlContext.checkPermission(AccessControlContext.java:366)

        at java.security.AccessController.checkPermission(AccessController.java:560)

        at oracle.security.jps.util.JpsAuth$AuthorizationMechanism$3.checkPermission(JpsAuth.java:458)

        at oracle.security.jps.util.JpsAuth.checkPermission(JpsAuth.java:518)

        at oracle.security.jps.util.JpsAuth.checkPermission(JpsAuth.java:544)

        Truncated. see log file for complete stacktrace

Fix/Resolution:

1.       Take the backup of weblogic.policy file to recover easily in case of any issues.

a.        Go to $WLS_HOME/server/lib/weblogic.policy

b.       cp weblogic.policy weblogic.policy_backup

2.       Add the below lines(end of the file) into weblogic.policy file

                        grant codeBase "file:$MW_HOME/patch_wls1036/patch_jars/*" {

permission java.security.AllPermission;

};

3.       Take the backup of system-jazn-data.xml file to recover easily in case of any issues

a.        Go to $DOMAIN_HOME/config/fmwconfig/system-jazn-data.xml

b.       $cp system-jazn-data.xml system-jazn-data.xml_backup

4.       Add the below lines (end of the file) into $DOMAIN_HOME/config/fmwconfig/system-jazn-data.xml:

<grant>

  <grantee>

    <codesource>

      <url>file:${wls.home}/../../patch_wls1036/patch_jars/*</url>

    </codesource>

  </grantee>

        <permissions>

                        <permission>
 <class>oracle.security.jps.service.credstore.CredentialAccessPermission</class>

     <name>context=SYSTEM,mapName=oim,keyName=*</name>

     <actions>read,write</actions>

                        </permission>

   </permissions>

</grant>

5.        Restart Admin and managed servers.

            NOTE: Kindly note, MW_HOME will vary from environment to environment depends on your machine path.

                          Also, similar solution is applicable to any component like OAM/OIF/OID etc..

           Hope this post helps you to resolve this issue. 

          

           Thank you for reading out my blog !!