Converting rows to single column: create table emp ( empno number, empname varchar2(100), deptno number); insert into emp values( 1, ’emp1′, 10); insert into emp values( 2, ’emp2′, 20); insert into emp values( 3, ’emp3′, 30); insert into emp values( 4, ’emp4′, 10); insert into emp values( 5, ‘paresh’, 30); insert into emp values( 6,…
Run following query as sysdba. alter session set nls_date_format=’DD-MON-RRRR:HH24:MI:SS’; alter session set nls_date_format=’DD-MON-RRRR:HH24:MI:SS’; select username, created, account_status /* Users who granted role with DML privs */ from dba_users where oracle_maintained = ‘N’ and username in (select grantee from dba_role_privs where granted_role in (select role from dba_roles where role in (select GRANTEE from dba_tab_privs where privilege…
Following script will be useful for tracking Oracle GoldenGate replicat process and related lag. This script will generate output on standard screen. You can redirect it using file redirection to logfile or other locations. while true do <goldengate home directory>/ggsci <<EOF > test.out info all exit EOF lag=`cat test.out | grep TESTREPLICAT | awk ‘{print…
If you want exclusive lock on any table, you need to make sure that no other session is accessing it. This happens when you want to run DDL or any ALTER statements, that internally needs exclusive lock. Following script will to find the blocker session and provide killing statement for clearing locks. col owner format…
Following script will help to collect CPU based on on every SAMPLE_TIME. This will help to collect IDLE CPU our from “vmstat” and store them in a file. #Setup SAMPLE_TIME for cpu data collection interval SAMPLE_TIME=5 while true do x=`vmstat | grep -v procs | grep -v swpd | awk ‘{print $15}’` echo `date +”%m-%d-%y…
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We need to follow the steps below for moving website from one hosting provider to other hosting provider. At Source Hosting Take backup of existing website. This will take complete backup of all your WP files plus SQL file for database. The final backup file will be in “.tar.gz” format. At Target Hosting Create the…
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Do you want to hide or remove the author name from your WordPress blog posts? Normally, blog posts are supposed to show author name with other meta-data like date and category. However, some blog owners may not want to display the author name next to their blog posts. By default, WordPress does not have an…
S3= simple storage service Object based storage. File size can be from 0 to 5TB. S3 provide object storage to store files, it does not provide block storage where you can install OS. Successful uploads generate HTTP 200 status code. You can turn on MFA delete. Files are stored in buckets, that’s another name of…
On reporting queries, there are too many “enq: KO – fast object checkpoint” wait event. All reporting queries are doing full table scans concurrently. Oracle uses direct path reads instead of db file scattered reads. And direct path reads require a checkpoint “_serial_direct_read”=NEVER Parameter Session Value Instance Value ————————————————– —————————— —————————— _serial_direct_read auto auto
This SQL will be used to identify SQL details of given Session. You need to pass SID and INSTANCE_ID as INPUT. This query will provide session details, SQL_ID, SQL_EXEC_START time and other transaction level details. set echo off feedback off verify offcol Transaction_id format a20col username format a8col days format 99.99col hours1 format 999999col TX_HRS…
