Update method content and add TSGs

Author: Clare Zheng (Shanghai Wicresoft Co Ltd)

articles/data-factory/connector-oracle.md

@@ -119,7 +119,7 @@ To enable encryption on Oracle connection, you have two options:
 
     - **Method 2**:
 
-        1. Get the TLS/SSL certificate information. Get the Distinguished Encoding Rules (DER)-encoded or Privacy Enhanced Mail (PEM)-encoded certificate information of your TLS/SSL cert, and save the output (----- Begin Certificate … End Certificate -----) as a text file.
+        1. Get the TLS/SSL certificate information. Get the Distinguished Encoding Rules (DER)-encoded or Privacy Enhanced Mail (PEM)-encoded certificate information of your TLS/SSL cert.
 
             ```
             openssl x509 -inform (DER|PEM) -in [Full Path to the DER/PEM Certificate including the name of the DER/PEM Certificate] -text

articles/data-factory/connector-troubleshoot-oracle.md

@@ -53,12 +53,33 @@ This article provides suggestions to troubleshoot common problems with the Oracl
 
 ## Error code: UserErrorFailedToConnectOdbcSource
 
+There are three error messages associated with this error code. Please check the cause and recommendation for each error message correspondingly.
+
 - **Message**: `"Cannot load trust store", or "SSL Handshake Failure reason [error:OA000086:SSL routines::certificate verify failed]"` 
 
 - **Cause**: The `truststore` is not appropriate for OpenSSL 3.0, as the `truststore` file is generated using weak ciphers like RC4, MD5 and SHA1.
 
 - **Recommendation**: You need to re-create the `truststore` using the strong ciphers like AES256. Refer to this [section](connector-oracle.md#linked-service-properties) for details about setting up the TLS connection using `truststore`.
 
+<br>
+
+- **Message**: <br>
+    `SSL Handshake Failure reason[Unknown SSL Error]`  
+    `SSL Handshake Failure reason [error:OA000410:SSL routines::sslv3 alert handshake failure]`
+
+- **Cause**: The server is not configured with strong ciphers for SSL communication. OpenSSL 3.0 should use either TLS 1.0 and higher as it deprecated SSL protocol versions. For example, the server might be accepting connections with TLS protocol versions until TLS1.0.
+
+- **Recommendation**: Revise the server configuration to use stronger TLS versions.
+
+<br>
+
+- **Message**: `SSL Handshake Failure reason [error:0A00014D:SSL routines::legacy sigalg disallowed or unsupported].` 
+
+- **Cause**: CryptoProtocolVersion is set to use deprecated TLS protocol versions with OpenSSL 3.0.
+
+- **Recommendation**: Specify the connection string property CryptoProtocolVersion=TLSv1.2.
+
+
 ## Related content
 
 For more troubleshooting help, try these resources: