New component deployment or applying fixes require the J2EE engine to be online. Assuming, you made a mistake that took J2EE offline and the only way to fix it is to apply a patch, you obviously need to get SAP's help. But if the system is a training or sandbox system, you can use batchdeployer to apply that fix while J2EE engine is offline.
- Go to /usr/sap/<SID>/<Instance>/j2ee/cluster/bootstrap/scripts
- Deploy the SCA using the following command syntax:
batchdeployer.sh -sdu <absolute-path>/SCA-file.SCA