【python的oracleundo實時監控】數據轉換是undo使用這個工具監控更直觀

 

select t.status, sum(t.blocks) * 8 / 1024 || 'M'
  from dba_undo_extents t
 group by t.status;

 

#!C:\Users\viviliving\AppData\Local\Programs\Python\Python37-32\python
# -*- coding: utf-8 -*-
# -*- coding: gbk -*-
import sys
import cx_Oracle
import os
import numpy as np  
import matplotlib.pyplot as plt  
#os.environ['NLS_LANG']='"SIMPLIFIED CHINESE_CHINA.ZHS16GBK"'
os.environ['NLS_LANG'] = 'AMERICAN_AMERICA.AL32UTF8'
os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'
os.environ['PATH']='E:\instantclientwin32_jb51\instantclient_11_2;%path%'
os.environ['TNS_ADMIN']= 'E:\instantclientwin32_jb51\instantclient_11_2'
os.environ['ORACLE_BASE'] = 'E:\instantclientwin32_jb51\instantclient_11_2'
os.environ['ORACLE_HOME'] = 'E:\instantclientwin32_jb51\instantclient_11_2'
c = ['silver','r','b','g'] 
plt.rcParams['font.sans-serif'] = ['SimHei']
#plt.figure(figsize=(6,2))
#fig, ax = plt.subplots(1,1,figsize=(4,5))
fig, ax = plt.subplots()
conn