APPSDBA Data Lake

  Oracle DROP INDEX statement DROP INDEX [schema_name.]index_name; DECLARE index_count INTEGER; BEGIN SELECT COUNT(*) INTO index_count FROM USER_INDEXES WHERE INDEX_NAME = 'index_name' ; IF index_count > 0 THEN EXECUTE IMMEDIATE 'DROP INDEX index_name' ; END IF; END; / In case want to check whether index exists and then delete it. If try to drop a non-existing, you will get the following error: SQL Error : ORA -01418 : specified index does not exist In SQLplus, set these before running the commands set long 100000 set longchunksize 100000 select DBMS_METADATA.GET_DDL( 'INDEX' , 'index_name') from all_indexes where owner in ( USER , 'USER_OTHER_THAN_LOGGED_IN_USER' ); Use below script to fetch metadata other information. SELECT DBMS_METADATA,GET_GRANTED_DDL('SYSTEM_GRANT','SSO******') from dual;

Following message reported from cluvfy while performing pre-requisite for Clusterware Installation:  Verifying RPM Package Manager database ...INFORMATION PRVG-11250 : The check "RPM Package Manager database" was not performed because it needs 'root' user privileges. SOLUTION Execute runcluvfy manually with "-method root" option and enter root password when prompted : Example: $/runcluvfy.sh stage -pre crsinst -n <HOSTNAME1>,<HOSTNAME2> -method root Enter "ROOT" password: For reference metalink doc id :  2548970.1

 shsebs7idb1: PRVG-2064 : There are no configured name servers in the file              '/etc/resolv.conf' on the nodes "shsebs7idb1" Solution: [root@shsebs7idb2 ~]# ls -ltr /etc/resolv.conf -rw-r--r--. 1 root root 78 Jul  3 11:02 /etc/resolv.conf [root@shsebs7idb2 ~]# mv /etc/resolv.conf /etc/resolv.conf.sid Rename resolv.conf to resolv.conf.sid for example and re run the installation again . It  worked for me

  This is due to below bugs: OL7 -  Unpublished Bug 21441387- 12.2/MAIN/OL7.1: CVU REPORTS /DEV/SHM NOT MOUNTED WHEN IT IS MOUNTED  21441387.8 RHEL 7 - Unpublished Bug 25907259 : RHEL7.2: CVU REPORTS /DEV/SHM NOT MOUNTED WHEN IT IS MOUNTED  25907259.8 As a work-around in OL7: In OL7, the /dev/shm is not mounted in /etc/fstab on a fresh system, it is done in: [root@testc140 u02]# ll /usr/lib/dracut/modules.d/99base/init.sh -rwxr-xr-x. 1 root root 11379 Mar 26 10:14 vi /usr/lib/dracut/modules.d/99base/init.sh and comment the below lines 62 if ! ismounted /dev/shm; then 63 mkdir -m 0755 /dev/shm 64 mount -t tmpfs -o mode=1777,nosuid,nodev,strictatime tmpfs /dev/shm >/dev/null 65 fi so, this validation is not really valid for OL7.    We can also safely ignore this message. For reference metalink id: -  Doc ID 2065603.1

  Execute "/tmp/CVU_19.0.0.0.0_grid/runfixup.sh" as root user on nodes "shsebs7idb1" to perform the fix up operations manually Press ENTER key to continue after execution of "/tmp/CVU_19.0.0.0.0_grid/runfixup.sh" has completed on nodes "shsebs7idb1" Fix: Daemon "avahi-daemon" not configured and running   Node Name                             Status   ------------------------------------  ------------------------   shsebs7idb1                           failed ERROR: shsebs7idb1: PRVG-9023 : Manual fix up command "/tmp/CVU_19.0.0.0.0_grid/runfixup.sh" was not issued by root user on node "shsebs7idb1" Result: "Daemon "avahi-daemon" not configured and running" could not be fixed on nodes "shsebs7idb1" SOLUTION: To fix this error, stop and disable avahi-daemon service. 1. Check avahi-daemon status: [root@shsebs7idb1 ~]# ls -l /bin/systemctl -rwxr-xr-x. 1 root root 717696 Sep  7  2018 /bin/sys