Summary of common operation and maintenance commands

One . linux Common commands

  see linux System version

 Mode one ： lsb_release -a
 If the command is not found, use the command to install ：yum install -y redhat-lsb
 Mode two ：cat /etc/redhat-release （ Apply to RedHat、CentOS）
 Mode three ：cat /etc/issue

remarks ： Display the following information as CentOS

Firewall related

remarks ：CentOS7 The firewall configuration of is very different from the previous version , The default is firewall, Use with previous versions iptables Dissimilarity

 CentOS7 

 View firewall status  ：firewall-cmd --state
 notes ：running—— Turn on ,not running —— close 
 Turn on the firewall ：systemctl start firewalld.service
 Turn off firewall ：systemctl stop firewalld.service
 Turn off startup ：systemctl disable firewalld.service
 Turn on the power and start ：systemctl enable firewalld.service

 CentOS6

service The way :
 View firewall status ：service iptables status
 Turn on the firewall ：service iptables start
 Turn off firewall ： service iptables stop
iptables The way :
 Enter the first init.d Catalog , The order is as follows ：
[[email protected] ~]# cd /etc/init.d/ [[email protected] init.d]#
 View firewall status ：
[[email protected] init.d]# /etc/init.d/iptables status
 Turn off the firewall temporarily ：
[[email protected] init.d]# /etc/init.d/iptables stop
 restart iptables：
[[email protected] init.d]# /etc/init.d/iptables restart

Release linux cache

sync && echo '1' > /proc/sys/vm/drop_caches
sync && echo '2' > /proc/sys/vm/drop_caches
sync && echo '3' > /proc/sys/vm/drop_caches

sync:  Write all unwritten system buffers to disk , Include modified  i-node、 Delayed block  I/O  And read-write mapping files . Otherwise, in the process of releasing the cache , You may lose unsaved files 

0 –  Don't release 
1 –  Free page cache 
2 –  Release dentries and inodes
3 –  Free all caches 

Linux Log view

 Output the log of a certain time period in the log file to a new file 
　　sed -n '/2019-04-22 16:10:/,/2019-04-22 16:20:/p' log.log > bbb.txt
 Find the number of lines before and after keywords in a log file 
　　cat filename | grep  keyword  -C10   -C： How many lines are displayed before and after  -A: How many lines are displayed after  -B: Show how many lines before 

View port usage

--  Check the port status 
 　 netstat -tnulp | grep 26379
-- linux  View port usage 
　　netstat -anp | grep 80
--  Port information used by the current environment 
　　netstat -nultp
--  The command was not found. Use the following installation 
　　yum -y install net-tools

Linux Timing task

#linux Timing task ：
　　service crond start // Start the service  
　　service crond stop // Close the service 
　　service crond restart // Restart the service  
　　service crond reload // service crond reload  
　　service crond status // see crontab Service status 
# install crond
　　yum -y install vixie-cron yum -y install crontabs
# chkconfig mysqld on 
　　chkconfig –level 345 crond on
# restart rsyslog
# restart cronlog（ No log output with this ）
　　sudo service rsyslog restart
 Log location ： /var/log/cronXXX
# View tasks 
　　crontab -l 
# Editing task 
　　crontab -e

 Command time format  : *  * *　 *　 *　　command  branch 　  when 　  Japan 　  month 　  Zhou 　
  The first 1 List minutes 1～59  Per minute * perhaps  */1 Express  
  The first 2 List hours 1～23（0 Express 0 spot ）  The first 3 List date 1～31  The first 4 List month 1～12  The first 5 Column ID week 0～6（0 Sunday ）  The first 6 Column command to run  
 some Crontab Examples of scheduled tasks ： 
 30 21 * * * /usr/local/etc/rc.d/lighttpd restart # Every night 21:30  restart apache 
 45 4 1,10,22 * * /usr/local/etc/rc.d/lighttpd restart # monthly 1、10、22 Japanese 4 : 45 restart apache 
 10 1 * * 6,0 /usr/local/etc/rc.d/lighttpd restart # Every Saturday 、 Sunday's 1 : 10 restart apache 
 0,30 18-23 * * * /usr/local/etc/rc.d/lighttpd restart # Every day 18 : 00 to 23 : 00 Between every 30 Minutes to restart apache 
 0 23 * * 6 /usr/local/etc/rc.d/lighttpd restart # Every Saturday 11 : 00 pm restart apache 
 * 23-7/1 * * * /usr/local/etc/rc.d/lighttpd restart # evening 11 Point to morning 7 Between points , Restart every hour apache 
 * */1 * * * /usr/local/etc/rc.d/lighttpd restart # Restart every hour apache 
 0 11 4 * mon-wed /usr/local/etc/rc.d/lighttpd restart # Monthly 4 Day and Monday to Wednesday every week 11 Click restart apache 
 0 4 1 jan * /usr/local/etc/rc.d/lighttpd restart # On January 1st 4 Click restart apache 
 */30 * * * * /usr/sbin/ntpdate cn.pool.ntp.org # Synchronize the time every half an hour  
 0 */2 * * * /sbin/service httpd restart # Restart every two hours apache 
 50 7 * * * /sbin/service sshd start # Every day 7：50 Turn on ssh service  
 50 22 * * * /sbin/service sshd stop # Every day 22：50 close ssh service  
 0 0 1,15 * * fsck /home # monthly 1 Number and 15 No. check /home  disk  
 1 * * * * /home/bruce/backup # The first minute of every hour /home/bruce/backup This file  
 00 03 * * 1-5 find /home "*.xxx" -mtime +4 -exec rm {} \; # From Monday to Friday every week 3 O 'clock , In the catalog /home in , Find the file name *.xxx The file of , And delete 4 Documents before . 
 30 6 */10 * * ls # Monthly 1、11、21、31 Day yes 6：30 Do it once ls command 

 nfs mount

#  Check the mount disk 
cat /etc/fstab
#  Re mount 
mount -a

 

Two . Docker Common commands

  see docker List of containers ：

docker ps

  Check the log

 Log view syntax ：
docker logs [OPTIONS] CONTAINER
OPTIONS explain ：
-f :  Trace log output 
--since : Show all logs for a start time 
-t :  Display time stamp 
--tail : List only the latest N Container log 
 View log command ：docker logs -f  Containers ID
 Real time view of the last 500 Logs ：docker logs -f --tail=500  Containers ID
 Look at the recent 30 Minute log ：docker logs --since 30m  Containers ID
 Check the latest log after a certain time 500 Logs ：docker logs --since="2021-11-30" --tail=500  Containers ID
 Check the log after a certain time ：docker logs -t --since="2021-11-30T00:00:00"  Containers ID
 Check the log of a certain period of time ：docker logs -t --since="2021-11-30T00:00:00" --until "2021-12-30T00:00:00"  Containers ID

Image export import

#  Export image to file 
$ docker save -o nginx-alpine.tar nginx:alpine
#  Import mirror 
$ docker load -i nginx-alpine.tar

Image delete

--  Delete the specified image 
docker rmi --force [-f] $(docker images | grep tarzan-mes | grep "7 months"| awk '{print $3}')
--  Delete the unlabeled image 
docker rmi [-f] $(docker images -q | awk '/^<none>/ { print $3 }')
-- Delete all images 
docker rmi [-f] $(docker images -qa)
 This kind of unlabeled image is also called   A false image (dangling image) , You can use the following command to display this kind of image specifically ：
docker image ls -f dangling=true
 Generally speaking , The mirror image has lost its value of existence , It can be deleted at will , You can use the following command to delete .
docker rmi $(docker images -q -f dangling=true)

Mirror operation

docker build . -t hzero-register:v200 -f ./../src/main/docker/Dockerfile
docker tag hzero-register:v200 k8s1.cluster.local:5000/hzero-register:v200
docker push k8s1.cluster.local:5000/hzero-register:v200

3、 ... and . K8s command

remarks ：uat refer to namspase ,mes-interface-7bbf6d64c9-88dhw refer to pod name

 

Get into pod Internal execution order ： kubectl exec -it uat -n mes-interface-7bbf6d64c9-88dhw -- /bin/bash

[[email protected]~]#kubectl -n mes-pro cp./jdk-8u291-linux-x64.tar.gz tarzan-mes-69994cdfdb-kfg96:/jdk.tar.gz
[[email protected]-prd-k8s1 ~]kubectl -n mes-pro exec -it tarzan-mes-69994cdfdb-kfg96 -/bin/bash

Log correlation

 View a certain pod Previous version log ：kubectl logs -p -n mes-pro tarzan-mes-6bd4bf5b79-xmkgk
 see pod Last exit details ：kubectl describe pod tarzan-mes-864bcbcd46-gw5zm -n mes-pro
k8s Node installation arthas ：
kubectl -n uat exec mes-interface-7bbf6d64c9-88dhw -- wget https://arthas.aliyun.com/arthas-boot.jar && java -jar arthas-boot.jar 1
 remarks ： final 1 Is a process, 
 take pod The logs in are copied to the host 
kubectl exec -n service tarzan-mes-c75587bfc-jpjp9 -- tar cf - data/tarzan/mes/tarzan-mes-2022-05-15.0.log | tar xf - -C /tmp

pod It contains telnet

apt update
apt install telnet

Other common commands

kubectl get po -A
kubectl get nodes
kubectl get pod -A -o wide
kubectl describe nodes wmsdevelapp
kubectl taint node wmsdevelapp node.kubernetes.io/unschedulable:NoSchedule-
kubectl top pod -n mesuat
journalctl -u kubelet.service
--
kubectl taint nodes 192.168.0.137 key1=value1:NoSchedule-

 

Four 、Mysql

View the transaction being locked

SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCKS;

View transactions waiting for locks

SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCK_WAITS;

Inquire about Ongoing transactions

SELECT * FROM information_schema.INNODB_TRX;

Inquire about mysql Processes that exist in the database

select * from information_schema.`PROCESSLIST`(show processlist;)

Kill thread

 kill  Threads id 

clear through InnoDB_row_lock State variables are used to analyze the contention of row locks on the system

show status like 'innodb_row_lock%';

 The description of each status is as follows ：

Innodb_row_lock_current_waits: The number of locks currently waiting ;

Innodb_row_lock_time: The total length of time from system startup to lock up ;

Innodb_row_lock_time_avg： The average time it takes to wait ;

Innodb_row_lock_time_max: The longest waiting time from system startup to now ;

Innodb_row_lock_waits: The total number of times the system has been waiting since it was started ;

 For this 5 Two state variables , Here's the important thing ：

Innodb_row_lock_time_avg,Innodb_row_lock_waits,Innodb_row_lock_time.

 Especially when waiting times are high , And every time I wait for a long time , We need to analyze why there are so many waiting in the system , Then according to the analysis results to formulate optimization .

select @a1:=VARIABLE_VALUE as a1
from information_schema.GLOBAL_STATUS
where VARIABLE_NAME='innodb_os_log_written'
union all
select sleep(60)
union all
select @a2:=VARIABLE_VALUE as a2
from information_schema.GLOBAL_STATUS
where VARIABLE_NAME='innodb_os_log_written';

select round((@a2[email protected])/1024/1024/@@innodb_log_files_in_group) as MB;


--------------------

SELECT
p2.`HOST` Blockedhost,
p2.`USER` BlockedUser,
r.trx_id BlockedTrxId,
r.trx_mysql_thread_id BlockedThreadId,
TIMESTAMPDIFF(
SECOND,
r.trx_wait_started,
CURRENT_TIMESTAMP
) WaitTime,
r.trx_query BlockedQuery,
l.lock_table BlockedTable,
m.`lock_mode` BlockedLockMode,
m.`lock_type` BlockedLockType,
m.`lock_index` BlockedLockIndex,
m.`lock_space` BlockedLockSpace,
m.lock_page BlockedLockPage,
m.lock_rec BlockedLockRec,
m.lock_data BlockedLockData,
p.`HOST` blocking_host,
p.`USER` blocking_user,
b.trx_id BlockingTrxid,
b.trx_mysql_thread_id BlockingThreadId,
b.trx_query BlockingQuery,
l.`lock_mode` BlockingLockMode,
l.`lock_type` BlockingLockType,
l.`lock_index` BlockingLockIndex,
l.`lock_space` BlockingLockSpace,
l.lock_page BlockingLockPage,
l.lock_rec BlockingLockRec,
l.lock_data BlockingLockData,
IF (p.COMMAND = 'Sleep', CONCAT(p.TIME,' seconds'), 0) idel_in_trx
FROM
information_schema.INNODB_LOCK_WAITS w
INNER JOIN information_schema.INNODB_TRX b ON b.trx_id = w.blocking_trx_id
INNER JOIN information_schema.INNODB_TRX r ON r.trx_id = w.requesting_trx_id
INNER JOIN information_schema.INNODB_LOCKS l ON w.blocking_lock_id = l.lock_id AND l.`lock_trx_id`=b.`trx_id`
INNER JOIN information_schema.INNODB_LOCKS m ON m.`lock_id`=w.`requested_lock_id` AND m.`lock_trx_id`=r.`trx_id`
INNER JOIN information_schema. PROCESSLIST p ON p.ID = b.trx_mysql_thread_id
INNER JOIN information_schema. PROCESSLIST p2 ON p2.ID = r.trx_mysql_thread_id
ORDER BY
WaitTime DESC;

--------------

00:0c:29:b3:b7:36 brd ff:ff:ff:ff:ff:ff

SELECT
p2.`HOST`  Blocked party host,
p2.`USER`  Blocked user ,
r.trx_id  Blocked party transactions id,
r.trx_mysql_thread_id  Blocked party thread number ,
TIMESTAMPDIFF(
SECOND,
r.trx_wait_started,
CURRENT_TIMESTAMP
)  Waiting time ,
r.trx_query  Blocked queries ,
l.lock_table  Blocking side locked table ,
m.`lock_mode`  Lock mode of blocked party ,
m.`lock_type` " The lock type of the blocked party ( Table lock or row lock )",
m.`lock_index`  The index locked by the blocking party ,
m.`lock_space`  The blocked party locks the object space_id,
m.lock_page  The number of pages locked by blocked party transactions ,
m.lock_rec  The number of rows locked by the blocked party transaction ,
m.lock_data  The primary key value of the blocked transaction lock record ,
p.`HOST`  Blocking host ,
p.`USER`  Blocking user ,
b.trx_id  Blocking party transactions id,
b.trx_mysql_thread_id  Blocking party thread number ,
b.trx_query  Blocking party query ,
l.`lock_mode`  Blocking side lock mode ,
l.`lock_type` " Lock type of blocking party ( Table lock or row lock )",
l.`lock_index`  Blocked index ,
l.`lock_space`  Blocking side lock object space_id,
l.lock_page  The number of blocked transaction lock pages ,
l.lock_rec  The number of blocked transaction lock rows ,
l.lock_data  The primary key value of the blocking party transaction lock record ,
IF (p.COMMAND = 'Sleep', CONCAT(p.TIME,'  second '), 0)  The idle time of the blocking party transaction 
FROM
information_schema.INNODB_LOCK_WAITS w
INNER JOIN information_schema.INNODB_TRX b ON b.trx_id = w.blocking_trx_id
INNER JOIN information_schema.INNODB_TRX r ON r.trx_id = w.requesting_trx_id
INNER JOIN information_schema.INNODB_LOCKS l ON w.blocking_lock_id = l.lock_id AND l.`lock_trx_id`=b.`trx_id`
INNER JOIN information_schema.INNODB_LOCKS m ON m.`lock_id`=w.`requested_lock_id` AND m.`lock_trx_id`=r.`trx_id`
INNER JOIN information_schema. PROCESSLIST p ON p.ID = b.trx_mysql_thread_id
INNER JOIN information_schema. PROCESSLIST p2 ON p2.ID = r.trx_mysql_thread_id
ORDER BY
 Waiting time  DESC;

-------------------------------------------------------------------

View Code

Check the transaction waiting status

select
r.trx_id waiting_trx_id,
r.trx_mysql_thread_id waiting_thread,
r.trx_query waiting_query,
b.trx_id blocking_trx_id,
b.trx_mysql_thread_id blocking_thread,
b.trx_query blocking_query
from
information_schema.innodb_lock_waits w
inner join information_schema.innodb_trx b on b.trx_id = w.blocking_trx_id
inner join information_schema.innodb_trx r on r.trx_id = w.requesting_trx_id;

View Code

View more specific transaction waiting status

select
b.trx_state,
e.state,
e.time,
d.state as block_state,
d.time as block_time,
a.requesting_trx_id,
a.requested_lock_id,
b.trx_query,
b.trx_mysql_thread_id,
a.blocking_trx_id,
a.blocking_lock_id,
c.trx_query as block_trx_query,
c.trx_mysql_thread_id as block_trx_mysql_tread_id
from
information_schema.innodb_lock_waits a
left join information_schema.innodb_trx b on a.requesting_trx_id = b.trx_id
left join information_schema.innodb_trx c on a.blocking_trx_id = c.trx_id
left join information_schema.processlist d on c.trx_mysql_thread_id = d.id
left join information_schema.processlist e on b.trx_mysql_thread_id = e.id
order by
a.requesting_trx_id;

View Code

View unclosed transactions

–mysql 5.6

select
a.trx_id,
a.trx_state,
a.trx_started,
a.trx_query,
b.id,
b.user,
b.db,
b.command,
b.time,
b.state,
b.info,
c.processlist_user,
c.processlist_host,
c.processlist_db,
d.sql_text
from
information_schema.innodb_trx a
left join information_schema.processlist b on a.trx_mysql_thread_id = b.id
and b.command = 'sleep'
left join performance_schema.threads c on b.id = c.processlist_id
left join performance_schema.events_statements_current d on d.thread_id = c.thread_id;
–mysql 5.5

select
a.trx_id,
a.trx_state,
a.trx_started,
a.trx_query,
b.id,
b. user,
b. host,
b.db,
b.command,
b.time,
b.state,
b.info
from
information_schema.innodb_trx a
left join information_schema.processlist b on a.trx_mysql_thread_id = b.id
where
b.command = 'sleep';

View Code

View transactions that have not been closed for some time

select
trx_id,
trx_started,
trx_mysql_thread_id
from
information_schema.innodb_trx
where
trx_started < date_sub(now(), interval 1 minute)
and trx_operation_state is null
and trx_query is null;

mysql Query in progress sql

select * from information_schema.`PROCESSLIST` where info is not null ORDER BY time desc;

mysql Query slow log file location

show variables like "%slow_query_log%";

Look for fragmented tables

 Method 1 ：
select table_schema db, table_name, data_free, engine
from information_schema.tables
where table_schema not in ('information_schema', 'mysql') and data_free > 0;

 Method 2 ：
SELECT TABLE_NAME,(DATA_LENGTH+INDEX_LENGTH)/1024/1024 size_mb,data_free/1024/1024 free_mb,TABLE_ROWS
FROM information_schema.tables where table_schema not in ('information_schema', 'mysql')
and data_free/1024/1024>=1 order by free_mb desc;

View Code

Clean up table fragments

 Method 1 
alter table  Table name  engine=InnoDB
alter table tableName engine=InnoDB;
# Method 2 
optimize table  Table name 
optimize table tableName;

Find the table without primary key

Select t.table_schema,t.table_name,t.engine,t.table_rows
From information_schema.tables as t
Left join information_schema.table_constraints as tc
On tc.table_schema=t.table_schema
And tc.table_name=t.table_name
And tc.constraint_type='PRIMARY KEY'
Where t.table_type='BASE TABLE'
And tc.constraint_type is null
And t.table_schema not in ('mysql','performance_schema','information_schema');

View Code

Slow log related settings

more /etc/my.cnf
show variables like '%slow%';
show variables like '%long%';
set global slow_query_log=off;
set global slow_query_log=on;
set @@long_query_time=10;

 

5、 ... and 、ORACLE

oralce monitor

 Check the listening status 
lsnrctl status
 Start listening 
lsnrctl start
 lsnrctl stop 
lsnrctl stop
 Register monitoring manually 
alter system register;

oracle Password expiration processing

 Query the default password saving time ：
 SELECT * FROM dba_profiles WHERE profile='DEFAULT' AND resource_name='PASSWORD_LIFE_TIME';
 Change to indefinite , If you need to change your password regularly , You can set the number of days required for each password change cycle （ Such as ：30:, Indicates every pass 30 You need to reset your password every day ）
 No deadline ：
 ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED;
30 The password is valid for days ：
 ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME 30;

 Switch to PDB perform ：
 alter session set container=orcl1;

 Change Password ： 
 alter user  Password expired USERNAME identified by  password ;

Archive log related

 Delete the file before the specified time 
find ./ -name *.log -mtime +7| xargs rm -rf
crosscheck archivelog all;
 Delete expired logs 
delete noprompt expired archivelog all;
 Delete all logs 
DELETE EXPIRED archivelog all;
 Delete the log three days ago 
delete archivelog until time 'sysdate -3';

Availability status

select INSTANCE_NUMBER,INSTANCE_NAME,STARTUP_TIME,STATUS from gv$instance;

Table space utilization status

SELECT d.tablespace_name "Name", d.status "Status",
TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.90') "Size (M)",
TO_CHAR (NVL (a.BYTES - NVL (f.BYTES, 0), 0) / 1024 / 1024,
'99999999.99'
) USE,
TO_CHAR (NVL ((a.BYTES - NVL (f.BYTES, 0)) / a.BYTES * 100, 0),
'990.00'
) "Used %"
FROM SYS.dba_tablespaces d,
(SELECT tablespace_name, SUM (BYTES) BYTES
FROM dba_data_files
GROUP BY tablespace_name) a,
(SELECT tablespace_name, SUM (BYTES) BYTES
FROM dba_free_space
GROUP BY tablespace_name) f
WHERE d.tablespace_name = a.tablespace_name(+)
AND d.tablespace_name = f.tablespace_name(+)
AND NOT (d.extent_management LIKE 'LOCAL' AND d.CONTENTS LIKE 'TEMPORARY')
UNION ALL
SELECT d.tablespace_name "Name", d.status "Status",
TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.90') "Size (M)",
TO_CHAR (NVL (t.BYTES, 0) / 1024 / 1024, '99999999.99') USE,
TO_CHAR (NVL (t.BYTES / a.BYTES * 100, 0), '990.00') "Used %"
FROM SYS.dba_tablespaces d,
(SELECT tablespace_name, SUM (BYTES) BYTES
FROM dba_temp_files
GROUP BY tablespace_name) a,
(SELECT tablespace_name, SUM (bytes_cached) BYTES
FROM v$temp_extent_pool
GROUP BY tablespace_name) t
WHERE d.tablespace_name = a.tablespace_name(+)
AND d.tablespace_name = t.tablespace_name(+)
AND d.extent_management LIKE 'LOCAL'
AND d.CONTENTS LIKE 'TEMPORARY';

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Copy

Buffer hit rate

select(1-(sum(decode(name,'physical reads',value,0))/(sum(decode(name,'db block gets',value,0))
+sum(decode(name,'consistent gets',value,0)))))*100"Hit Ratio"
from gv$sysstat;

Data dictionary cache hit rate

select(1-(sum(getmisses)/sum(gets)))*100"Hit Ratio"from gv$rowcache;

Library cache hit rate

selectSum(Pins)/(Sum(Pins)+Sum(Reloads))*100"Hit Ratio"from gV$LibraryCache;

PGA Memory sort hit rate

select a.INST_ID,a.NAME,a.value "Disk Sorts", b.value "Memory Sorts",round((100*b.value)/decode((a.value+b.value),0,1,(a.value+b.value)),2)"Pct Memory Sorts"from gv$sysstat a, gv$sysstat b where a.name ='sorts (disk)'and b.name ='sorts (memory)';

 remarks ： These values are in 98%  The above is better 

Data fragment status

USED_MB： Indicates that the object has used size 
FRAG_MB： Indicates the size of the fragment 
FRAGMENT_PER： Indicates the percentage of fragmentation 

alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
/*set lines 220 pages 300
col owner for a30
col TABLE_NAME for a50
col SEGMENT_TYPE for a20*/
SELECT /*+ parallel(b 4)*/ OWNER,
TABLE_NAME,
tablespace_name,
SEGMENT_TYPE,
segment_space_management MANAGEMENT,
TABLE_MB USED_MB,
ROUND(WASTE_PER * TABLE_MB /100,2) FRAG_MB,
WASTE_PER fragment_per,
LAST_ANALYZED
FROM (SELECT OWNER,
SEGMENT_NAME TABLE_NAME,
LAST_ANALYZED,
SEGMENT_TYPE,
GREATEST(ROUND(100*(NVL(HWM - AVG_USED_BLOCKS,0)/ GREATEST(NVL(HWM,1),1)),2),0) WASTE_PER,
ROUND(BYTES / POWER(1024,2),2) TABLE_MB,
NUM_ROWS,
BLOCKS,
EMPTY_BLOCKS,
HWM HIGHWATER_MARK,
AVG_USED_BLOCKS,
CHAIN_PER,
EXTENTS,
MAX_EXTENTS,
ALLO_EXTENT_PER,
DECODE(GREATEST(MAX_FREE_SPACE - NEXT_EXTENT,0),0,'N','Y') CAN_EXTEND_SPACE,
NEXT_EXTENT,
MAX_FREE_SPACE,
O_TABLESPACE_NAME TABLESPACE_NAME,
block_size,
segment_space_management
FROM (SELECT A.OWNER OWNER,
A.SEGMENT_NAME,
A.SEGMENT_TYPE,
A.BYTES,
B.NUM_ROWS,
A.BLOCKS BLOCKS,
B.EMPTY_BLOCKS EMPTY_BLOCKS,
A.BLOCKS - B.EMPTY_BLOCKS -1 HWM,
DECODE(ROUND((B.AVG_ROW_LEN * NUM_ROWS *(1+(PCT_FREE /100)))/ dt.block_size,0),0,1,
ROUND((B.AVG_ROW_LEN * NUM_ROWS *(1+(PCT_FREE /100)))/ dt.block_size,0))+2 AVG_USED_BLOCKS,
ROUND(100*(NVL(B.CHAIN_CNT,0)/ GREATEST(NVL(B.NUM_ROWS,1),1)),
2) CHAIN_PER,
ROUND(100*(A.EXTENTS / A.MAX_EXTENTS),2) ALLO_EXTENT_PER,
A.EXTENTS EXTENTS,
A.MAX_EXTENTS MAX_EXTENTS,
B.NEXT_EXTENT NEXT_EXTENT,
B.TABLESPACE_NAME O_TABLESPACE_NAME,
B.LAST_ANALYZED,
dt.block_size,
DT.segment_space_management
FROM SYS.DBA_SEGMENTS A,
SYS.DBA_TABLES B,
dba_tablespaces dt
WHERE A.OWNER = B.OWNER
and SEGMENT_NAME = TABLE_NAME
and dt.segment_space_management ='AUTO'
and B.tablespace_name in('TS_RPT_DATA','IX_RPT_DATA','PERFSTAT')
and dt.tablespace_name = a.tablespace_name
and b.last_analyzed > to_date('20210501','yyyymmdd')
union all
SELECT A.OWNER OWNER,
SEGMENT_NAME ||'.'|| B.PARTITION_NAME,
SEGMENT_TYPE,
BYTES,
B.NUM_ROWS,
A.BLOCKS BLOCKS,
B.EMPTY_BLOCKS EMPTY_BLOCKS,
A.BLOCKS - B.EMPTY_BLOCKS -1 HWM,
DECODE(ROUND((B.AVG_ROW_LEN * B.NUM_ROWS *(1+(B.PCT_FREE /100)))/ dt.block_size,0),0,1,
ROUND((B.AVG_ROW_LEN * B.NUM_ROWS *(1+(B.PCT_FREE /100)))/ dt.block_size,0))+2 AVG_USED_BLOCKS,
ROUND(100*(NVL(B.CHAIN_CNT,0)/ GREATEST(NVL(B.NUM_ROWS,1),1)),2) CHAIN_PER,
ROUND(100*(A.EXTENTS / A.MAX_EXTENTS),2) ALLO_EXTENT_PER,
A.EXTENTS EXTENTS,
A.MAX_EXTENTS MAX_EXTENTS,
B.NEXT_EXTENT,
B.TABLESPACE_NAME O_TABLESPACE_NAME,
d.last_analyzed,
dt.block_size,
DT.segment_space_management
FROM SYS.DBA_SEGMENTS A,
SYS.DBA_TAB_PARTITIONS B,
SYS.DBA_TABLES D,
dba_tablespaces dt
WHERE A.OWNER = B.TABLE_OWNER
and SEGMENT_NAME = B.TABLE_NAME
and SEGMENT_TYPE ='TABLE PARTITION'
and dt.segment_space_management ='AUTO'
and B.tablespace_name in('TS_RPT_DATA','IX_RPT_DATA','PERFSTAT')
and dt.tablespace_name = a.tablespace_name
AND D.OWNER = B.TABLE_OWNER
AND D.TABLE_NAME = B.TABLE_NAME
AND A.PARTITION_NAME = B.PARTITION_NAME
AND D.last_analyzed > to_date('20210501','yyyymmdd')),
(SELECT TABLESPACE_NAME F_TABLESPACE_NAME,
MAX(BYTES) MAX_FREE_SPACE
FROM SYS.DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME)
WHERE F_TABLESPACE_NAME = O_TABLESPACE_NAME
AND GREATEST(ROUND(100*(NVL(HWM - AVG_USED_BLOCKS,0)/GREATEST(NVL(HWM,1),1)),2),0)>12
AND OWNER notin('SYS','SYSMAN')
AND BLOCKS > POWER(1024,2)/ block_size) b
where ROUND(WASTE_PER * TABLE_MB /100,2)>100
ORDER BY 7 DESC;

View Code

Database process and deadlock process status

SELECT distinct SESS.SID,

SESS.SERIAL#,

LO.ORACLE_USERNAME,

LO.OS_USER_NAME,

AO.OBJECT_NAME,

LO.LOCKED_MODE,

'ALTER SYSTEM KILL SESSION '''|| SESS.SID ||','|| SESS.SERIAL# || ''' immediate;',

SESS.STATUS

FROM GV$LOCKED_OBJECT LO,

DBA_OBJECTS AO,

GV$SESSION SESS,

Gv$process p

WHERE AO.OBJECT_ID = LO.OBJECT_ID

AND LO.SESSION_ID = SESS.SID

and SESS.paddr = p.addr;

View Code

Oralce See check for configuration parameters

/*set linesize 200
col name format a40
col value format a40
set pagesize 2000*/
select name,value from v$parameter where isdefault='FALSE' order by 1;

  6、 ... and 、 HTTP Details of status code

2XX success

· 200 OK, Indicates that the request from the client is processed correctly on the server side · 204 No content, Indicates that the request was successful , But the response message does not contain the main body of the entity · 206 Partial Content, Make a range request

3XX Redirect

· 301 moved permanently, Permanent redirection , Indicates that the resource has been assigned a new URL · 302 found, Temporary redirections , Indicates that the resource has been temporarily assigned a new URL · 303 see other, Indicates that there is another URL, You should use GET Methods clove resources · 304 not modified, Indicates that the server allows access to resources , But due to the occurrence of the request not meeting the conditions · 307 temporary redirect, Temporary redirection , and 302 The meaning is the same

4XX Client error

· 400 bad request, Syntax error in request message · 401 unauthorized, Indicates that the request sent needs to be passed HTTP Authentication information for authentication · 403 forbidden, Indicates that access to the requested resource is denied by the server · 404 not found, Indicates that the requested resource was not found on the server

5XX Server error

· 500 internal sever error, Indicates that an error occurred on the server side while executing the request · 503 service unavailable, Indicates that the server is temporarily overloaded or under maintenance , Unable to process request

403 Detailed explanation

 On the whole , return 403 The status code is , Deny or prohibit access to . however , Although the server denies or prohibits access , But it has understood your request . The specific reasons are as follows ：

 Error code ：403.1
HTTP
403.1
 Blocking access ： Disable executable access 
Internet
 information service 
 The reason is that the execution authority is not enough , The solution is ：
 open “ Management tools ” Of “Internet
 information service ”, The right choice “WEB Site properties ” Of “ Home directory ” tab , hold “ Executive license ” Options from “ nothing ” Change it to “ Pure script ” Just fine .

 Error code ：403.2
403.2 The error is due to " Read " Access is prohibited . This error is caused by no default web page available and directory browsing is not enabled for the directory , Or to display 
HTML
 The directory where the web page resides is only marked " Executable " or " Script " jurisdiction .

 Error code ：403.3
403.3 The error is due to " write in " Access is prohibited , When trying to upload a file to a directory or modify a file in a directory , But this directory does not allow " Write " This error occurs when accessing .

 Error code ：403.4
403.4 The error is due to the requirement SSL Caused by , You must use... In the address of the page you want to view "https".

 Error code ：403.5
403.5 The error is due to the requirement to use 128 Bit encryption algorithm Web Caused by the browser , If your browser doesn't support 128 This error will occur in the bit encryption algorithm , You can connect to Microsoft website to upgrade your browser .

 Error code ：403.6
403.6 The error is due to IP
 The address was rejected . If there are servers in the server that cannot access the site IP Address list , And you use IP When the address is in the list, you will return this error message .

 Error code ：403.7
403.7 The error is because the customer certificate is required , When the resource to be accessed requires the browser to have a secure socket layer that the server can recognize 
(SSL) This error will be returned when the client certificate .

 Error code ：403.8
403.8 The error is caused by disabling site access , If there is a server that cannot access the site DNS Name list , And you use 
DNS This information is returned when the name is in the list . Please pay attention to the difference 403.6 And 403.8 error .

 Error code ：403.9
403.9 The error is caused by too many connected users , because Web The server is busy , This error is returned when there is too much traffic to process the request .

 Error code ：403.10
403.10 The error is caused by an invalid configuration , When you try to execute... From a directory CGI、ISAPI Or other executable programs , But this error will be returned when the directory does not allow the program to be executed .

 Error code ：403.11
403.11 The error is that you do not have permission to view the page due to a password change .

 Error code ：403.12
403.12 The error is caused by the mapper denying access . The web page you want to view requires a valid customer certificate , And your customer certificate mapping does not have access to this Web The error that the mapper denies access will be returned when the site is accessed .

 Error code ：403.13
403.13 The error is that the web page to be viewed requires a valid client certificate, and the client certificate used has been revoked , Or it is impossible to determine whether the certificate has been revoked .

 Error code ：403.15
403.15 The error is caused by too many customer access permissions , This error is returned when the server exceeds its client access permission limit .

 Error code ：403.16
403.16 The error is caused by the untrusted or invalid client certificate .

 Error code ：403.17
403.17 The error is caused by the fact that the customer certificate has expired or is not yet valid .

 The following three are IIS6.0 special ：
403.18- The requested cannot be performed in the current application pool URL.
403.19- Cannot execute for clients in this application pool CGI.
403.20-Passport Login failed 

View Code