How to Resolve OpenSSH 8 Problems for Oracle 19c
OpenSSH 8 I found there're some problems related to secure file copy (scp) happened in Oracle 19c when OpenSSH is 8 or higher in Linux… Read More »How to Resolve OpenSSH 8 Problems for Oracle 19c
Network
How mysqldump Remote to Local
Remote to Local For migrating a remote database, you can dump and pipe the whole database from remote server to local server via ssh tunnel… Read More »How mysqldump Remote to Local
Why Tnsping Hang
sqlplus, tnsping or lsnrctl Hangs I can't cover all situations in this post, but I have some cases to share with you. Those hanging all… Read More »Why Tnsping Hang
426 Transfer aborted. Data connection closed.
When I retrieved a file from a remote host, ftp aborted the transfer immediately....ftp> get alertORCL.log200 PORT command successful.150 Opening data connection for alertORCL.log (3347200… Read More »426 Transfer aborted. Data connection closed.
How to Build SSH Equivalency Between Two Servers
In this post, we will introduce two kinds of ways to build user's SSH equivalency. Both methods are good. Manual establishing can make your know… Read More »How to Build SSH Equivalency Between Two Servers
3 Steps to Make Filezilla Preserve Timestamp
Making Filezilla Preserve Timestamp By default, all downloaded files are new to client machines, so their modified date are the date they downloaded. It'll become… Read More »3 Steps to Make Filezilla Preserve Timestamp
How to Make Your Mail Trusted by Gmail and Yahoo Mail
Almost all free mail providers like Gmail and Yahoo Mail will filter out spam or spoofed emails by validating the source (SMTP server), if your… Read More »How to Make Your Mail Trusted by Gmail and Yahoo Mail
How to Use LFTP over SFTP Protocol
Basically, lftp use ftp protocol , if you want to use lftp to connect to the server with sftp protocol underlyingly, you should use the pattern… Read More »How to Use LFTP over SFTP Protocol
How to SFTP to a Non-Default Port in Console
Generally, you can sftp to the server by the default port 22, but sometimes, system administrators only allow privileged users to use it, you might… Read More »How to SFTP to a Non-Default Port in Console
How to Resolve NameServer Persistency After Every Reboot
When we want to change DNS permanently in Linux, what will you do? I guess you will modify /etc/resolv.conf. But newer versions of Linux appear… Read More »How to Resolve NameServer Persistency After Every Reboot