ORA-16191: Primary log shipping client not logged on standby

This error usually is because of password file mismatch: someone updated in primary and forgot to pass across to standby nodes, missed a node… but what if password file in primary and standby is the same? In this case, password files are correct so PRIMARY should not have issues sending logs,right? But no, instead it... » read more

RMAN: HOW TO REFRESH a DB from backup

Lets suppose you have been requested to refresh a TEST/DEV Database and you don’t have access to the source DB, just access to the backups someone created. In this case, this is a Windows environment and we are going to assume the following information: DB and Archive log backups located under: “D:\RMAN\Backup\”Control file backup to... » read more

ORA-27106: system pages not available to allocate memory

If you have set use_large_pages=ONLY, server need to have enough huge pages to allocate the SGA in the number of pages available, if not, you might get this error while trying to start instance: In this system you have only enough pages to allocate 17G and you require 28G, not good.How do you fix? You... » read more

sshUserSetup.sh: Remote host reachability check failed

I had this issue while installing grid in my lab.Checked everything: ping to both nodes, ssh to both nodes both ways… all ok, but still not able to run sshUserSetup.sh: Well… what was the problem? “racnode1 racnode2” vs “racnode1 racnode2” ( the “)And now it runs ok: Post Views: 1,831

How to check how much archive logs DB is generating

You have been requested to check how much a DB is generating on archive logs, it can be for FRA size planing, standby lag analysis…. you name it. We can see here DB has the higher load during 1am to 3am. Here you can get the size it is generating per day: Post Views: 803

SQL: How to kill sessions in bulk

For this first post, lets start with something easy that everyone that manages a DB should know. You have been requested to kill everything that RMAN is running for whatever reason. It can be backup is no longer valid or it is generating impact in performance, which needs to be resolved right away. Do you... » read more