When attempting to start the SAP Agent after either OS maintenance or a new installation, the Agent fails with:
20201229/162832.644 - U02004172 Error while calling function module 'RFC_SYSTEM_INFO'.
20201229/162832.645 - Initialization of repository destination failed: Password decryption failed: java.lang.NoClassDefFoundError: javax.crypto.b (initialization failure).
Review of the nohup from start may include lines similar to:
Exception in thread "Attach API " java.lang.ExceptionInInitializerError at java.lang.J9VMInternals.ensureError(J9VMInternals.java:148) at java.lang.J9VMInternals.recordInitializationFailure
Improper installation of java on the target system.
Release : 12.3
Component : AUTOMATION ENGINE
These errors point to java installing with relative and not default pathing. It may be possible to work around this by starting the agent with java fully qualified similar to:
/usr/java8_64/bin/java -jar $PWD/ucxjr3x.jar &
However, the recommendation would be to have java fully reinstalled on the OS.