If the password is correct, you cannot log on to the CentOS system. solution:

The user name and password are correct, but cannot log on to the Linux server. why ?? There are several possible types: 1. if the disk space is full, you cannot log on to the Linux server. Restart the server to try or delete unnecessary files. 2. the password is indeed forgotten. you can change it in single-user mode. 3. with oracle10G installed, modify vi/etc/pam. d/login as required by the document to add the following statement sessionrequir

The user name and password are correct, but cannot log on to the Linux server. why ?? There are several possible types:

1. if the disk space is full, you cannot log on to the Linux server. Restart the server to try or delete unnecessary files.

2. the password is indeed forgotten. you can change it in single-user mode.

3. oracle 10 GB is installed and modified as required in the document

Vi/etc/pam. d/login

Add the following statement session required/lib/security/pam_limits.so

Local users cannot log on to the system:
The last line in vi/etc/pam. d/login: "sessionrequired/lib/security/pam_limits.so"

Change it to sessionrequired/lib64/security/pam_limits.so to save and restart OK!