方法一：sqlplus / as sysdba(sqlplus user/password@ssid)
Method Two: SQL> the SELECT * from v $ Version ;
Method three: SQL> the SELECT * from product_component_version ;
方法四：SQL>select vesion from v$instance;
Check the Linux operating system version
Viewing the kernel version command
1, $
CAT / proc / Version
(Linux operating system to view the current version information)
Role / proc directory
2, $ uname -a
(see the current version of Linux operating system kernel information)
The role of the uname command
2. Check the Linux version:
1) $
lsb_release -a
, you can list all the version information // Note: This command applies to all of linux, including Redhat, SuSE, Debian and other distributions.
2) $
CAT / etc / Issue (see the current version of Linux operating system release information)
3) $
CAT / etc / RedHat-Release (see the current version of Linux operating system release information)
4）$file /sbin/init
View Linux hardware configuration information:
# Cat / proc / cpuinfo (Linux view cpu-related information, including the type, frequency, core information, etc.)
#dmidecode | grep "Product Name" // View machine information
#dmesg | grep -i eth // View card information
#cat / proc / meminfo // Check memory information
Some can also be used in ... FreeBSD
# uname -a # View kernel / operating system / CPU information
#cat / proc / version # Viewing the kernel
# cat / etc / issue # check the OS version
# head -n 1 / etc / issue # check the OS version
# cat / proc / cpuinfo # View CPU information
# hostname # View the computer name
# lspci -tv # list all PCI devices
# lsusb -tv # lists all USB devices
# lsmod # listed loadable kernel modules
# env # viewing environment variable resource
# free -m # to view memory usage and the amount of swap space
# df -h # see how each partition usage
# du -sh <directory name> # View the specified directory size
# grep MemTotal / proc / meminfo # view the amount of memory
# Grep MemFree / proc / meminfo # view the amount of free memory
# uptime # View system uptime, number of users, load
# cat / proc / loadavg # View system load disk and partition
# mount | column -t # view the partition mounted state
# fdisk -l # View all partition
# swapon -s # View all swap partitions
# hdparm -i / dev / hda # View disk parameters (only for IDE devices)
# dmesg | grep IDE # view when you start the IDE device detects network conditions
# ifconfig # View all the properties of the network interface
# iptables -L # View firewall settings
# route -n # View the routing table
# netstat -lntp # View all listening ports
# netstat -antp # view all established connections
# netstat -s # View network statistics process
# Ps -ef # view all processes
# top # display real-time status of the user process
# w # view active user
# id <user name> # Display the user information
# last # view the user login log
# cut -d: -f1 / etc / View all users of the system passwd #
# cut -d: -f1 / etc / group # group to see all system
# crontab -l # to view the current user's scheduled tasks service
# chkconfig -list # lists all system services
# chkconfig -list | grep list all start on # of system service program
# rpm -qa # view all installed packages
cat / proc / cpuinfo: View CPU parameters
cat / proc / partitions: Check the hard disk and partition
cat / proc / meminfo: View memory information
cat / proc / version: Check version, similar to the uname -r
cat / proc / ioports: View equipment io port
cat / proc / interrupts: View interrupts
cat / proc / pci: pci device View information
cat / proc / swaps: View information for all swap partitions
# uname -a # View kernel / operating system / CPU information
#cat / proc / version # Viewing the kernel
# cat / etc / issue # check the OS version
# head -n 1 / etc / issue # check the OS version
# cat / proc / cpuinfo # View CPU information
# hostname # View the computer name
# lspci -tv # list all PCI devices
# lsusb -tv # lists all USB devices
# lsmod # listed loadable kernel modules
# env # viewing environment variable resource
# free -m # to view memory usage and the amount of swap space
# df -h # see how each partition usage
# du -sh <directory name> # View the specified directory size
# grep MemTotal / proc / meminfo # view the amount of memory
# Grep MemFree / proc / meminfo # view the amount of free memory
# uptime # View system uptime, number of users, load
# cat / proc / loadavg # View system load disk and partition
# mount | column -t # view the partition mounted state
# fdisk -l # View all partition
# swapon -s # View all swap partitions
# hdparm -i / dev / hda # View disk parameters (only for IDE devices)
# dmesg | grep IDE # view when you start the IDE device detects network conditions
# ifconfig # View all the properties of the network interface
# iptables -L # View firewall settings
# route -n # View the routing table
# netstat -lntp # View all listening ports
# netstat -antp # view all established connections
# netstat -s # View network statistics process
# Ps -ef # view all processes
# top # display real-time status of the user process
# w # view active user
# id <user name> # Display the user information
# last # view the user login log
# cut -d: -f1 / etc / View all users of the system passwd #
# cut -d: -f1 / etc / group # group to see all system
# crontab -l # to view the current user's scheduled tasks service
# chkconfig -list # lists all system services
# chkconfig -list | grep list all start on # of system service program
# rpm -qa # view all installed packages
cat / proc / cpuinfo: View CPU parameters
cat / proc / partitions: Check the hard disk and partition
cat / proc / meminfo: View memory information
cat / proc / version: Check version, similar to the uname -r
cat / proc / ioports: View equipment io port
cat / proc / interrupts: View interrupts
cat / proc / pci: pci device View information
cat / proc / swaps: View information for all swap partitions
Method Two: SQL> the SELECT * from v $ Version ;
Method three: SQL> the SELECT * from product_component_version ;
方法四：SQL>select vesion from v$instance;
Check the Linux operating system version
Viewing the kernel version command
1, $
CAT / proc / Version
(Linux operating system to view the current version information)
Role / proc directory
2, $ uname -a
(see the current version of Linux operating system kernel information)
The role of the uname command
2. Check the Linux version:
1) $
lsb_release -a
, you can list all the version information // Note: This command applies to all of linux, including Redhat, SuSE, Debian and other distributions.
2) $
CAT / etc / Issue (see the current version of Linux operating system release information)
3) $
CAT / etc / RedHat-Release (see the current version of Linux operating system release information)
4）$file /sbin/init
View Linux hardware configuration information:
# Cat / proc / cpuinfo (Linux view cpu-related information, including the type, frequency, core information, etc.)
#dmidecode | grep "Product Name" // View machine information
#dmesg | grep -i eth // View card information
#cat / proc / meminfo // Check memory information
Some can also be used in ... FreeBSD
# uname -a # View kernel / operating system / CPU information
#cat / proc / version # Viewing the kernel
# cat / etc / issue # check the OS version
# head -n 1 / etc / issue # check the OS version
# cat / proc / cpuinfo # View CPU information
# hostname # View the computer name
# lspci -tv # list all PCI devices
# lsusb -tv # lists all USB devices
# lsmod # listed loadable kernel modules
# env # viewing environment variable resource
# free -m # to view memory usage and the amount of swap space
# df -h # see how each partition usage
# du -sh <directory name> # View the specified directory size
# grep MemTotal / proc / meminfo # view the amount of memory
# Grep MemFree / proc / meminfo # view the amount of free memory
# uptime # View system uptime, number of users, load
# cat / proc / loadavg # View system load disk and partition
# mount | column -t # view the partition mounted state
# fdisk -l # View all partition
# swapon -s # View all swap partitions
# hdparm -i / dev / hda # View disk parameters (only for IDE devices)
# dmesg | grep IDE # view when you start the IDE device detects network conditions
# ifconfig # View all the properties of the network interface
# iptables -L # View firewall settings
# route -n # View the routing table
# netstat -lntp # View all listening ports
# netstat -antp # view all established connections
# netstat -s # View network statistics process
# Ps -ef # view all processes
# top # display real-time status of the user process
# w # view active user
# id <user name> # Display the user information
# last # view the user login log
# cut -d: -f1 / etc / View all users of the system passwd #
# cut -d: -f1 / etc / group # group to see all system
# crontab -l # to view the current user's scheduled tasks service
# chkconfig -list # lists all system services
# chkconfig -list | grep list all start on # of system service program
# rpm -qa # view all installed packages
cat / proc / cpuinfo: View CPU parameters
cat / proc / partitions: Check the hard disk and partition
cat / proc / meminfo: View memory information
cat / proc / version: Check version, similar to the uname -r
cat / proc / ioports: View equipment io port
cat / proc / interrupts: View interrupts
cat / proc / pci: pci device View information
cat / proc / swaps: View information for all swap partitions
# uname -a # View kernel / operating system / CPU information
#cat / proc / version # Viewing the kernel
# cat / etc / issue # check the OS version
# head -n 1 / etc / issue # check the OS version
# cat / proc / cpuinfo # View CPU information
# hostname # View the computer name
# lspci -tv # list all PCI devices
# lsusb -tv # lists all USB devices
# lsmod # listed loadable kernel modules
# env # viewing environment variable resource
# free -m # to view memory usage and the amount of swap space
# df -h # see how each partition usage
# du -sh <directory name> # View the specified directory size
# grep MemTotal / proc / meminfo # view the amount of memory
# Grep MemFree / proc / meminfo # view the amount of free memory
# uptime # View system uptime, number of users, load
# cat / proc / loadavg # View system load disk and partition
# mount | column -t # view the partition mounted state
# fdisk -l # View all partition
# swapon -s # View all swap partitions
# hdparm -i / dev / hda # View disk parameters (only for IDE devices)
# dmesg | grep IDE # view when you start the IDE device detects network conditions
# ifconfig # View all the properties of the network interface
# iptables -L # View firewall settings
# route -n # View the routing table
# netstat -lntp # View all listening ports
# netstat -antp # view all established connections
# netstat -s # View network statistics process
# Ps -ef # view all processes
# top # display real-time status of the user process
# w # view active user
# id <user name> # Display the user information
# last # view the user login log
# cut -d: -f1 / etc / View all users of the system passwd #
# cut -d: -f1 / etc / group # group to see all system
# crontab -l # to view the current user's scheduled tasks service
# chkconfig -list # lists all system services
# chkconfig -list | grep list all start on # of system service program
# rpm -qa # view all installed packages
cat / proc / cpuinfo: View CPU parameters
cat / proc / partitions: Check the hard disk and partition
cat / proc / meminfo: View memory information
cat / proc / version: Check version, similar to the uname -r
cat / proc / ioports: View equipment io port
cat / proc / interrupts: View interrupts
cat / proc / pci: pci device View information
cat / proc / swaps: View information for all swap partitions
1, $
CAT / proc / Version
(Linux operating system to view the current version information)
Role / proc directory
2, $ uname -a
(see the current version of Linux operating system kernel information)
The role of the uname command
2. Check the Linux version:
1) $
lsb_release -a
, you can list all the version information // Note: This command applies to all of linux, including Redhat, SuSE, Debian and other distributions.
2) $
CAT / etc / Issue (see the current version of Linux operating system release information)
3) $
CAT / etc / RedHat-Release (see the current version of Linux operating system release information)
4）$file /sbin/init
View Linux hardware configuration information:
# Cat / proc / cpuinfo (Linux view cpu-related information, including the type, frequency, core information, etc.)
#dmidecode | grep "Product Name" // View machine information
#dmesg | grep -i eth // View card information
#cat / proc / meminfo // Check memory information
Some can also be used in ... FreeBSD
# uname -a # View kernel / operating system / CPU information
#cat / proc / version # Viewing the kernel
# cat / etc / issue # check the OS version
# head -n 1 / etc / issue # check the OS version
# cat / proc / cpuinfo # View CPU information
# hostname # View the computer name
# lspci -tv # list all PCI devices
# lsusb -tv # lists all USB devices
# lsmod # listed loadable kernel modules
# env # viewing environment variable resource
# free -m # to view memory usage and the amount of swap space
# df -h # see how each partition usage
# du -sh <directory name> # View the specified directory size
# grep MemTotal / proc / meminfo # view the amount of memory
# grep MemFree / proc / meminfo # view the amount of free memory
# Uptime # View system uptime, number of users, load
# cat / proc / loadavg # View system load disk and partition
# mount | column -t # View articulated partition status
# fdisk -l # View all partition
# swapon -s View all swap partitions #
# hdparm -i / dev / hda # View disk parameters (only for IDE devices)
# dmesg | grep IDE # view when you start the IDE device detection status of the network
# ifconfig # view properties for all network interfaces
# iptables - L # View firewall settings
# route -n # View the routing table
# netstat -lntp # View all listening ports
# netstat -antp # view all established connections
# netstat -s # View network statistics process
# ps -ef # View all process
# top # display real-time status of the user process
# W # view active user
# id <user name> # Display the user information
# last # view the user login log
# cut -d: -f1 / etc / passwd # View all system users
# cut -d: -f1 / etc / View all groups group # system
# crontab -l # to view the current user's scheduled tasks service
# chkconfig -list # lists all system services
# chkconfig -list | grep on # lists all system services startup
# rpm -qa # View all installed packages
cat / proc / cpuinfo: View CPU parameters
cat / proc / partitions: Check the hard disk and partition
cat / proc / meminfo: View memory information
cat / proc / version: Check version, similar to the -r uname
CAT / proc / ioports: View equipment io port
cat / proc / interrupts: View interrupts
cat / proc / pci: View information pci device
cat / proc / swaps: View information for all swap partitions
# uname -a # View kernel / operating system / CPU information
#cat / proc / version # Viewing the kernel
# cat / etc / issue # check the OS version
# head -n 1 / etc / issue # check the OS version
# cat / proc / cpuinfo # View CPU information
# hostname # View the computer name
# lspci -tv # list all PCI devices
# lsusb -tv # lists all USB devices
# lsmod # listed loadable kernel modules
# env # viewing environment variable resource
# free -m # to view memory usage and the amount of swap space
# df -h # see how each partition usage
# du -sh <directory name> # View the specified directory size
# grep MemTotal / proc / meminfo # view the amount of memory
# grep MemFree / proc / meminfo # view the amount of free memory
# Uptime # View system uptime, number of users, load
# cat / proc / loadavg # View system load disk and partition
# mount | column -t # View articulated partition status
# fdisk -l # View all partition
# swapon -s View all swap partitions #
# hdparm -i / dev / hda # View disk parameters (only for IDE devices)
# dmesg | grep IDE # view when you start the IDE device detection status of the network
# ifconfig # view properties for all network interfaces
# iptables - L # View firewall settings
# route -n # View the routing table
# netstat -lntp # View all listening ports
# netstat -antp # view all established connections
# netstat -s # View network statistics process
# ps -ef # View all process
# top # display real-time status of the user process
# W # view active user
# id <user name> # Display the user information
# last # view the user login log
# cut -d: -f1 / etc / passwd # View all system users
# cut -d: -f1 / etc / View all groups group # system
# crontab -l # to view the current user's scheduled tasks service
# chkconfig -list # lists all system services
# chkconfig -list | grep on # lists all system services startup
# rpm -qa # View all installed packages
cat / proc / cpuinfo: View CPU parameters
cat / proc / partitions: Check the hard disk and partition
cat / proc / meminfo: View memory information
cat / proc / version: Check version, similar to the -r uname
CAT / proc / ioports: View equipment io port
cat / proc / interrupts: View interrupts
cat / proc / pci: View information pci device
cat / proc / swaps: View information for all swap partitions