nerdseeker365

pt-variable-advisor localhost --user=root --ask-pass

Just compare in mysqld section
pt-config-diff /etc/my.cnf.d/server.cnf h=localhost --user=root --ask-pass
pt-config-diff /etc/my.cnf.d/server.cnf /etc/my.cnf.d/server1.cnf

pt-summary

pt-mysql-summary --user=root --ask-pass

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Links

• The top 5 proactive measures to minimize MySQL downtime
• The small improvements of MySQL 5.6: Duplicate Index Detection
• Keynotes, BOFs, and the Community Networking Reception at Percona Live MySQL Conference and Expo
• Analyzing Slow Query Table in MySQL 5.6
• Percona Toolkit by example – pt-stalk
• innodb_stats_on_metadata and slow queries on INFORMATION_SCHEMA
• [Webinar: SQL Query

nerdseeker365

import json
import pg8000 as dbapi
from pprint import pprint

def getconnection(database,host,port,user,password):
    conn= None
    try:
        conn=dbapi.connect(database=database,host=host, port=port,\
            user=user,password=password,ssl=True)
    except Exception as err:

nerdseeker365

package testjava;

import java.util.HashMap;
import java.util.Random;

/*
 * URL Shortener
 */
public class URLShortener {
	// storage for generated keys

nerdseeker365

WITH COLUMN_DEFINITION AS (
SELECT
    TABLE_NAME,
    COLUMN_NAME,
    CASE
        WHEN (DATA_TYPE= 'NUMBER' AND DATA_SCALE = 0 AND DATA_PRECISION <= 9) THEN 'INTEGER'
        WHEN (DATA_TYPE= 'NUMBER' AND DATA_SCALE = 0 AND DATA_PRECISION <= 18) THEN 'BIGINT'
        WHEN (DATA_TYPE= 'NUMBER' AND DATA_SCALE = 0 AND DATA_PRECISION >= 19) THEN 'DECIMAL(' || DATA_PRECISION || ',0)'
        WHEN (DATA_TYPE= 'NUMBER' AND DATA_SCALE > 0)  THEN 'DECIMAL(' || DATA_PRECISION || ',' || DATA_SCALE ||')'
        WHEN (DATA_TYPE= 'NUMBER' AND nvl(DATA_SCALE,0) = 0 AND nvl(DATA_PRECISION,0) = 0) THEN 'DECIMAL(38,18)'

nerdseeker365

SELECT /* + RULE */
	df.tablespace_name AS "Tablespace"
	,df.bytes / (1024 * 1024 * 1024) AS "Size (GB)"
	,Trunc(fs.bytes / (1024 * 1024 * 1024)) AS "Free (GB)"
FROM (
	SELECT tablespace_name
		,Sum(bytes) AS bytes
	FROM dba_free_space
	GROUP BY tablespace_name
	) fs

nerdseeker365

SELECT OBJECT_TYPE
	,OBJECT_SCHEMA
	,OBJECT_NAME
FROM (
	SELECT 'TABLE' AS OBJECT_TYPE
		,TABLE_NAME AS OBJECT_NAME
		,TABLE_SCHEMA AS OBJECT_SCHEMA
	FROM information_schema.TABLES
	
	UNION

nerdseeker365

SELECT DISTINCT n.nspname AS schemaname
 ,c.relname AS tablename
 ,a.attname AS COLUMN
 ,a.attnum AS column_position
 ,pg_catalog.format_type(a.atttypid, a.atttypmod) AS TYPE
 ,pg_catalog.format_encoding(a.attencodingtype) AS encoding
  ,a.attisdistkey AS distkey
 ,a.attsortkeyord AS sortkey
 ,a.attnotnull AS notnull
 ,a.attencodingtype AS compression