• oracle 获取table相关信息



    select COLUMN_NAME,DATA_TYPE,DATA_PRECISION,DATA_SCALE,NULLABLE
    from user_tab_columns
    where table_name ='YourTableName'

    TBP_PM_EQUIP_CALL_STATUS


    select table_name,comments from
    all_tab_comments where table_name = 'TBP_PM_EQUIP_CALL_STATUS'


    select * from
    all_col_comments where table_name = 'TBC_RM_MAIN_TOOL_ACT'

    获取表名:
    Oracle的user_talbes用于记录了用户表信息。

    select TABLE_NAME from all_tables where table_name = 'TBC_RM_MAIN_TOOL_ACT'

    select A.table_name,B.comments from all_tables A, all_tab_comments B where A.TABLE_NAME = B.TABLE_NAME and length(b.comments) > 3


    select TABLE_NAME from all_tables
    select count(*) from all_tables

    获取某个表的字段:

    USER_TAB_COLS中记录了用户表的列信息。下面是别人写的:

    SELECT USER_TAB_COLS.TABLE_NAME as 表名,USER_TAB_COLS.COLUMN_NAME as 列名 , USER_TAB_COLS.DATA_TYPE as 数据类型, USER_TAB_COLS.DATA_LENGTH as 长度, USER_TAB_COLS.NULLABLE as 是否为空,USER_TAB_COLS.COLUMN_ID as 列序号,user_col_comments.comments as 备注 FROM USER_TAB_COLS inner join user_col_comments on user_col_comments.TABLE_NAME=USER_TAB_COLS.TABLE_NAME and user_col_comments.COLUMN_NAME=USER_TAB_COLS.COLUMN_NAME


    如何从Oracle、中取得表的注释

    user_tab_comments;表注释

    user_col_comments;表字段注释

    以上两个只能获取自己用户的表的注释信息,如果要访问自己能够访问的其他用户的表,则需要使用:

    all_tab_comments;表注释

    all_col_comments;表字段注释

    当然,如果有DBA权限,则可以使用

    dba_tab_comments;表注释

    dba_col_comments;表字段注释

    dba*和all*最好指定owner条件。user*没有该字段

    user_tab_comments;表注释

    user_col_comments;表字段注释

    以上两个只能获取自己用户的表的注释信息,如果要访问自己能够访问的其他用户的表,则需要使用:

    all_tab_comments;表注释

    all_col_comments;表字段注释

    当然,如果有DBA权限,则可以使用

    dba_tab_comments;表注释

    dba_col_comments;表字段注释

    dba*和all*最好指定owner条件。user*没有该字段

    pool  guowang.log
    ----set pagesize 9999
    ----set linesize 9999
    ----set long 99999

    set echo off
    set feedback off

    alter session set NLS_DATE_FORMAT="YYYY-MM-DD HH24:MI:SS";

    prompt '********************数据库部署方式********************'

    select name,value from v$parameter where name='cluster_database';

    prompt '********************数据库软件个数及名称********************'

    prompt '********************部署的数据库类型及版本********************'

    select * from v$version;

    prompt '********************数据库实例个数及名称********************'

    select instance_number,instance_name from v$instance;
            
    prompt '********************数据库用户名称********************'    

    select username from dba_users;

    prompt '********************表空间名称及大小(G)********************'

    SELECT   UPPER (f.tablespace_name) "TABLESPACE_NAME",
             d.tot_grootte_mb "TOTAL_SIZE(M)",
             TO_CHAR (ROUND (  (d.tot_grootte_mb - f.total_bytes)
                             / d.tot_grootte_mb
                             * 100,
                             2
                            ),
                      '990.99'
                     )||'%' "PER_USERD",d.tot_grootte_mb - f.total_bytes "USERD(M)",f.total_bytes "FREE(M)"
        FROM (SELECT   tablespace_name,
                       ROUND (SUM (BYTES) / (1024 * 1024), 2) total_bytes
                FROM SYS.dba_free_space
              GROUP BY tablespace_name) f,
             (SELECT   dd.tablespace_name,
                       ROUND (SUM (dd.BYTES) / (1024 * 1024), 2) tot_grootte_mb
                  FROM SYS.dba_data_files dd
              GROUP BY dd.tablespace_name) d
       WHERE d.tablespace_name = f.tablespace_name
    ORDER BY 3 DESC;
        

    prompt '********************数据库文件存放路径********************'

    select name from v$datafile;
        
    prompt '********************业务数据存放位置********************'

    prompt '********************业务数据存储机制********************'
        
    prompt '********************业务系统现有数据量(G)********************'

    select owner,SUM(BYTES/1024/1024) from dba_segments group by owner;
        
    prompt '********************数据库最大连接用户数********************'

    select value from v$parameter where name='processes';
        
    prompt '********************数据库数据的处理类型********************'
        
    prompt '********************数据库操作高峰时段********************'
        
    prompt '********************数据库字符集********************'
        
    select * from nls_database_parameters

    prompt '********************内存分配量(SGA)(M)********************'

    select name,VALUE/1024/1024 from v$parameter where name in('sga_max_size','sga_target');

    prompt '********************listerner端口********************'

    host lsnrctl stat

    prompt '********************归档日志日增长数********************'
        
    select trunc(first_time) "DATE",thread#,count(1) "ARCH_PER_DAY",round(count(1) / 24) "ARCH_PER_HR"
      from v$log_history
     group by trunc(first_time), thread#
     order by 1,3 desc;

    ----------------------------
    select to_char(first_time, 'yyyy-mm-dd hh24') "DATE",
           thread#,
           count(1) "ARCH_HR"
      from v$log_history
     where trunc(first_time) in
           (select d_time
              from (select max(count(1)) m_arch
                      from v$log_history
                     group by trunc(first_time)) a,
                   (select trunc(first_time) d_time, count(1) d_arch
                      from v$log_history
                     group by trunc(first_time)) b
             where a.m_arch = b.d_arch)
     group by to_char(first_time, 'yyyy-mm-dd hh24'), thread#
     order by thread#,3 desc;

        
    prompt '********************归档日志大小(MB)********************'


    select bytes/1024/1024 from v$log;
        
    prompt '********************归档日志总增长量
    日增长量计算:
    (每天生成的生产日志个数*大小)********************'        
            
                

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  • 原文地址:https://www.cnblogs.com/2eggs/p/13431622.html
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