Openssl and curl can be used to check the supported ssl version on a server
Check if tlsv1 is supported
#openssl s_client -connect <hostname:port> -tls1
Steps to generate self signed certificate on Linux:
#openssl genrsa -des3 -out <key filename.key> 4096 #openssl req -new -key <key filename generated above> -out <csr file filename.csr> #openssl x509 -req -days 3650 -in <csr file filename.csr> -signkey <key filename.key> -out <cert filename.crt>
the -des3 encrypt PEM output with ede cbc des using 168 bit key
Upgrade the openssl version from:
#openssl version OpenSSL 1.0.1e-fips 11 Feb 2013
# openssl version OpenSSL 1.0.2c 12 Jun 2015
New and Deprecated Terminology for 12c
WebLogic Server 12c (12.2.1) – https://docs.oracle.com/middleware/1221/wls/NOTES/whatsnew.htm
OFMW Configuring Elasticity in Dynamic Clusters for Oracle WebLogic Server – https://docs.oracle.com/middleware/1221/wls/ELAST/title.htm
OFMW Administering Node Manager for Oracle WebLogic Server – https://docs.oracle.com/middleware/1221/wls/NODEM/intro.htm
Understanding Oracle Fusion Middleware Concepts – https://docs.oracle.com/middleware/1221/core/ASCON/toc.htm
Multiple time we have faced issue that we are not able to login to discussion server admin after completion of installation and completion.
This could happen cos the LDAP is not configured properly in owc_discussion server.
Following are the steps to change or update the LDAP configuration in discussion server. Continue reading “Cannot login to owc_discussion after installation”
Below are some commonly used keytool commands that i always forget 🙂
In one of my projects recently, even after importing the correct ssl certificates in the keystore (cacerts and DemoTrust.jks) on the weblogic server, when accessing the webservice over https gave an error.
javax.xml.ws.WebServiceException: javax.net.ssl.SSLHandshakeException: [Security:090497]HANDSHAKE_FAILURE alert received from example.com - 172.16.250.58. Check both sides of the SSL configuration for mismatches in supported ciphers, supported protocol versions, trusted CAs, and hostname verification settings.
One of the important parameters when doing performance tuning is tuning of the Application Modules.
Below are some of the important ampool parameters to consider for tuning: Continue reading “ADF Application Module tuning”