Today, install a bit oracle database and found that it is cumbersome and often error. It is a little bit simple recording errors
centos7 oracle12.2.0.1 automatically install script
https://github.com/keepwalking86/oracle12c
opatch did not lead to the upgrade can not be performed, opatch download version and download psu
https://blog.csdn.net/huoshuyinhua/article/details/52441505
OPatch报错 Prerequisite check "CheckActiveFilesAndExecutables" failed
https://blog.csdn.net/lichangzai/article/details/46505481
Under linux startup, shutdown oracle service command
lsnrctl start /stop /status
listener.ora Monitor Fail
The listener supports no services
Modify listener.ora increase SID_LIST_LISTENER information
https://blog.csdn.net/weixin_41975463/article/details/82859750
Remote connection does not go find this to solve the problem
error: ora-01034:oracle not available ora-27101:shared memory realm does not exist
https://blog.csdn.net/zhanghai412/article/details/7947566
Patch fails
Patch 29249637 apply (pdb CDB$ROOT): WITH ERRORS
logfile: /u01/app/oracle/cfgtoollogs/sqlpatch/29249637/22802302/29249637_apply_ORCL_CDBROOT_20196? 15_11_03_18.log (errors)
Solution export NLS_LANG = American_America.US8PC437