达梦数据库常用sql查询

提前预知

以下sql查询皆为dm8版本

一、常用的数据库信息sql查询

1、数据库相关信息

a、查询实例

SELECT '实例名称' 数据库选项,INSTANCE_NAME 数据库集群相关参数值 FROM v$instance 
union all
SELECT '数据库授权码',(SELECT SERIES_NO FROM V$LICENSE) 
UNION ALL
SELECT '数据库有效期',cast((SELECT EXPIRED_DATE FROM V$LICENSE)as VARCHAR) 
UNION ALL
SELECT '授权客户',(SELECT AUTHORIZED_CUSTOMER FROM V$LICENSE) 
UNION ALL
SELECT '数据库版本',substr(svr_version,instr(svr_version,'(')) FROM v$instance 
union all
SELECT '数据库版本小号',(SELECT id_code) FROM v$instance 
union all
SELECT '数据库实例路径',(SELECT PARA_VALUE from v$dm_ini where para_name like'%SYSTEM_PATH%') 
  FROM v$instance 
union all
SELECT '字符集', 
       CASE SF_GET_UNICODE_FLAG() WHEN '0' THEN 'GBK18030' WHEN '1' then 'UTF-8' when '2' then 'EUC-KR' end 
union all
SELECT '页大小',cast(PAGE()/1024 as varchar) 
union all
SELECT '簇大小',cast(SF_GET_EXTENT_SIZE() as varchar) 
union all
SELECT '大小写敏感',cast(SF_GET_CASE_SENSITIVE_FLAG() as varchar) 
union all
SELECT '数据库模式',MODE$ from v$instance 
union all
SELECT '唯一魔数',cast(permanent_magic as varchar) 
union all
SELECT 'LSN',cast(cur_lsn as varchar) from v$rlog 
union all
SELECT 'BLANK_PAD_MODE',cast ( BLANK_PAD_MODE() as varchar);

例子预览：

b、查询授权信息

SELECT LIC_VERSION "许可证版本号",
       SERIES_NO "序列号",
       CASE WHEN "SERVER_SERIES"='P' THEN '个人版' 
	        WHEN "SERVER_SERIES"='S' THEN '标准版' 
	        WHEN "SERVER_SERIES"='E' THEN '企业版' 
	        WHEN "SERVER_SERIES"='A' THEN '安全版' 
	        WHEN "SERVER_SERIES"='C' THEN '云版本' 
	        WHEN "SERVER_SERIES"='D' THEN '开发版' 
       END "服务器颁布类型",
       CASE WHEN "SERVER_TYPE" ='1' THEN '正式版' 
            WHEN "SERVER_TYPE"='2' THEN '测试版' 
            WHEN "SERVER_TYPE"='3' THEN '试用版' 
       END "服务器发布类型",
       SERVER_VER "服务器版本号",
       EXPIRED_DATE "有效日期",
       AUTHORIZED_CUSTOMER "用户名称",
       AUTHORIZED_USER_NUMBER "授权用户数",
       CONCURRENCY_USER_NUMBER "并发连接数",
       MAX_CPU_NUM "最大CPU数目",
       NOACTIVE_DEADLINE "未激活状态截止日期",
       PRODUCT_TYPE "产品类型",
       PROJECT_NAME "项目名称",
       CPU_TYPE "授权运行的 CPU类型",
       OS_TYPE "授权运行的操作系统",
       MAX_CORE_NUM "授权最大CPU核个数",
       CASE WHEN "CLUSTER_TYPE"='1' THEN '主备' 
            WHEN "CLUSTER_TYPE"='2' THEN 'MPP' 
            WHEN "CLUSTER_TYPE"='NULL' THEN '无集群' 
       END "授权使用的集群类型",
       DATE_GEN "KEY的生成日期"
  FROM V$LICENSE;

c、数据库基本信息

SELECT "NAME" "数据库名称" ,
       "CREATE_TIME" "数据库创建时间" ,
       case when "ARCH_MODE"='Y' then '归档' else '不归档' end "归档模式" ,
       "LAST_CKPT_TIME" "最后一次检查点时间" ,
       case when "STATUS$" ='1' then '启动' 
            when "STATUS$"='2' then '启动，redo 完成' 
            when "STATUS$"='3' then 'MOUNT' 
            when "STATUS$"='4' then '打开' 
            when "STATUS$"='5' then '挂起' 
       end "库状态" ,
       case when "ROLE$" ='0' then '普通库' 
            when "ROLE$"='1' then '主库' 
            when "ROLE$"='2' then '备库' 
       end "角色" ,
       "TOTAL_SIZE"*page/1024/1024||'M' "总大小" ,
       -- "RAC_NODES" "DSC集群系统中的实例总数" ,
       "OPEN_COUNT" "数据库open次数" ,
       "STARTUP_COUNT" "数据库启动次数" ,
       "LAST_STARTUP_TIME" "数据库最近一次启动时间" ,
       page/1024 ||'K' "页大小" ,
       SF_GET_EXTENT_SIZE() "簇大小" ,
       case when SF_GET_CASE_SENSITIVE_FLAG()='1' then '敏感' 
            when SF_GET_CASE_SENSITIVE_FLAG()='0' then '不敏感' 
       end "标识符大小写敏感",
       case when SF_GET_UNICODE_FLAG() ='0' then 'GB18030' 
            when SF_GET_UNICODE_FLAG() ='1' then 'UTF-8' 
            when SF_GET_UNICODE_FLAG() ='2'then 'EUC-KR' 
       end "数据库字符集"
  FROM V$DATABASE;

d、数据库实例信息

SELECT "NAME" "实例名称" ,
       "INSTANCE_NUMBER" "实例ID",
       "HOST_NAME" "主机名称" ,
       "SVR_VERSION" "服务器版本" ,
       "DB_VERSION" "数据库版本" ,
       "START_TIME" "服务器启动时间" ,
       "STATUS$" "系统状态" ,
       "MODE$" "数据库模式" ,
       "OGUID" "控制文件的 OGUID",
       --"RAC_SEQNO" "DSC 序号"
       --"RAC_ROLE" "DSC系统角色"
       SF_GET_PARA_VALUE(2,'PORT_NUM') "端口号"
  FROM V$INSTANCE;

e、表空间信息

  select C."ID" "表空间 ID",
         C."NAME" "表空间名称",
         --C."CACHE" "CACHE名" ,
         CASE WHEN C."TYPE$"='1' THEN 'DB 类型' 
              WHEN C."TYPE$"='2' THEN '临时表空间' 
         END "表空间类型",
         CASE WHEN C."STATUS$"='0' THEN 'ONLINE' 
              WHEN C."STATUS$"='1' THEN 'OFFLINE' 
              WHEN C."STATUS$"='2' THEN 'RES_OFFLINE' 
              WHEN C."STATUS$"='3' THEN 'CORRUPT' 
         END "状态", 
         C."TOTAL_SIZE"*page/1024/1024||'M' "总大小",
         C."FILE_NUM" "包含的文件数",
         C."ENCRYPT_NAME" "加密算法名",
         C."ENCRYPTED_KEY" "加密密钥",
         D.used_per ||'%' "表空间使用率"
    from V$TABLESPACE c
    join ( SELECT a.id,
                  100-(sum(b.free_size)*100/sum(b.total_size)) used_per
             FROM V$TABLESPACE a,
                  V$DATAFILE b
            where a.id=b.GROUP_ID
         group by a.id ) d
      on c.id=d.id
order by c.id;

 f、数据库实例会话信息

SELECT STATE "会话状态" ,
         CLNT_IP "客户端IP",
         CLNT_TYPE "连接类型",
         CURR_SCH "当前模式",
         USER_NAME "当前用户",
         COUNT(*) "会话数"
    FROM V$SESSIONS
GROUP BY STATE ,
         CLNT_IP ,
         CLNT_TYPE,
         CURR_SCH ,
         USER_NAME
ORDER BY STATE;

2、备份与归档信息

a、归档信息

SELECT "ARCH_NAME" "归档名称",
       "ARCH_TYPE" "归档类型",
       "ARCH_DEST" "归档目标",
       "ARCH_FILE_SIZE" "单个归档文件大小",
       "ARCH_SPACE_LIMIT" "归档大小上限",
       "ARCH_TIMER_NAME" "定时器名称",
       "ARCH_IS_VALID" "归档状态",
       "ARCH_WAIT_APPLY" "性能模式",
       "ARCH_INCOMING_PATH" "远程归档保存在本地的目录",
       case arch_space_limit when 0 then '无限制归档上限，归档总大小为'||
                     (SELECT SUM(LEN)/(1024*1024) FROM V$ARCH_FILE)||'M' 
            else 
                     ( SELECT SUM(LEN)/(1024*1024)*100 FROM V$ARCH_FILE )/arch_space_limit||'%'
       END "已使用归档空间百分比"
  FROM V$DM_ARCH_INI;

b、备份集信息

-- 会校验每个备份集，占用IO，慎用 

SELECT "DEVICE_TYPE" "存储介质类型" ,
       "BACKUP_ID" "备份ID" , 
       "BACKUP_NAME" "备份名" ,
       "BACKUP_PATH" "备份路径" ,
       CASE WHEN "TYPE" ='0' THEN '基备份' WHEN "TYPE"='1' THEN '增量备份' WHEN "TYPE"='2' THEN '表备份' WHEN "TYPE"='3' THEN '归档备份' END "备份类型" ,
       CASE WHEN "LEVEL" ='0' THEN '联机备份' WHEN "LEVEL"='1' THEN '脱机备份' END "是否脱机备份",
       CASE WHEN "RANGE#"='1' THEN '库备份' WHEN "RANGE#"='2' THEN '表空间备份' WHEN "RANGE#"='3' THEN '表级备份' WHEN "RANGE#"='4' THEN '归档备份' END "备份类型" ,
       "BASE_NAME" "基备份名" ,
       "BACKUP_TIME" "备份时间" ,
       "BEGIN_LSN" "备份的起始 LSN值" ,
       "END_LSN" "结束备份的 LSN值" ,
       "BKP_NUM" "备份片个数" ,
       CASE WHEN ( SELECT SF_BAKSET_CHECK(DEVICE_TYPE, BACKUP_PATH) ) ='1' THEN '有效' WHEN ( SELECT SF_BAKSET_CHECK(DEVICE_TYPE, BACKUP_PATH) ) =0 THEN '无效' END "备份校验",
       'SELECT SF_BAKSET_CHECK(' ||DEVICE_TYPE ||',' ||BACKUP_PATH||');' "校验命令"
  FROM V$BACKUPSET
 WHERE BACKUP_TIME>(SYSDATE-7);

3、用户相关信息

a、用户信息

select "USERNAME" "用户名",
       "ACCOUNT_STATUS" "账号状态",
       "LOCK_DATE" "锁定开始的时间",
       "EXPIRY_DATE" "密码过期时间",
       "DEFAULT_TABLESPACE" "默认表空间",
       "TEMPORARY_TABLESPACE" "默认临时表空间",
       "CREATED" "创建时间",
       "PROFILE" "表空间所在路径",
       "EDITIONS_ENABLED" "是否可读" ,
       "AUTHENTICATION_TYPE" "用户登陆验证类型" ,
       "NOWDATE" "当前日期时刻"
  from DBA_USERS;

b、用户会话设置信息

select b.name "用户名" ,
       a.SESS_PER_USER "最大会话数" ,
       a.CONN_IDLE_TIME "最大空闲时间(分钟)", 
       a.FAILED_NUM "登录失败次数" ,
       a.LIFE_TIME "口令有效期(天)" ,
       a.REUSE_TIME "口令等待期(天)" ,
       a.REUSE_MAX "口令变更次数" ,
       a.LOCK_TIME "口令锁定期(分钟)" ,
       a.GRACE_TIME "口令宽限期(天)" ,
       CASE WHEN a.LOCKED_STATUS='1' THEN 'LOCKED' 
            ELSE THEN 'OPEN' 
       END "用户状态",
       a.LASTEST_LOCKED "最后一次的锁定时间" ,
       a.PWD_POLICY "口令策略" ,
       --a.RN_FLAG "是否只读" ,
       a.ALLOW_ADDR "允许的 IP 地址" ,
       a.NOT_ALLOW_ADDR "不允许的 IP 地址",
       a.ALLOW_DT "允许登录的时间段" ,
       a.NOT_ALLOW_DT "不允许登录的时间段" ,
       a.LAST_LOGIN_DTID "上次登录时间" ,
       a.LAST_LOGIN_IP "上次登录 IP 地址" ,
       a.FAILED_ATTEMPS "即将被锁定的连续登录失败的次数"
  from SYSUSERS a,
       SYS.SYSOBJECTS b
 where a.id=b.id;

4、死锁与阻塞信息

a、死锁查询

select "SEQNO" "编号" ,
       "TRX_ID" "事务ID" ,
       "SESS_ID" "会话ID" ,
       "SESS_SEQ" "会话序列号" ,
       "SQL_TEXT" "产生死锁的SQL语句",
       "HAPPEN_TIME" "死锁发生的时间"
  from V$DEADLOCK_HISTORY;

b、事务阻塞信息

 WITH TRX_TAB AS
      (
            SELECT OB1.NAME,
            L1.TRX_ID FROM V$LOCK L1,
            SYSOBJECTS OB1 WHERE L1.TABLE_ID=OB1.ID
        AND OB1.ID <>0
      )
      ,
      TRX_SESS AS
      ( SELECT L.TRX_ID WT_TRXID ,
              L.ROW_IDX BLK_TRXID,
              L.BLOCKED , ( SELECT NAME TABLE_NAME FROM TRX_TAB A WHERE A.TRX_ID=L.TRX_ID ) WT_TABLE ,
              S1.SESS_ID WT_SESS ,
              S2.SESS_ID BLK_SESS ,
              S1.USER_NAME WT_USER_NAME ,
              S2.USER_NAME BLK_USER_NAME,
              S1.SQL_TEXT ,
              S1.CLNT_IP ,
              DATEDIFF(S, S1.LAST_SEND_TIME, SYSDATE) SS
         FROM V$LOCK L ,
              V$SESSIONS S1, 
              V$SESSIONS S2
        WHERE L.TRX_ID =S1.TRX_ID
          AND L.ROW_IDX=S2.TRX_ID
      )
SELECT SYSDATE "当前时间" ,
       WT_TRXID "所属事务ID" ,
       BLK_TRXID "TID锁对象事务ID",
       CASE WHEN BLOCKED='1' THEN '是' ELSE THEN '否' END "是否阻塞" ,
       WT_TABLE "被阻塞表" ,
       WT_SESS "被阻塞的会话ID" ,
       BLK_SESS "阻塞的会话ID",
       WT_USER_NAME "被阻塞用户" ,
       BLK_USER_NAME "阻塞用户" ,
       SF_GET_SESSION_SQL(WT_SESS) "被阻塞的SQL" ,
       CLNT_IP "客户端IP" ,
       SS||'秒' "阻塞时间"
  FROM TRX_SESS
 WHERE BLOCKED=1;

5、作业调度信息

a、作业信息

SELECT A.ID "作业ID号" ,
       A.NAME "作业名称" ,
       CASE WHEN A."ENABLE"='1' THEN '启用' 
            WHEN A."ENABLE"='0' THEN '不启用' 
       END "是否被启用",
       A.USERNAME "创建者名称" ,
       A.CREATETIME "创建时间" ,
       A.MODIFYTIME "最后一次被修改的时间" ,
       A.DESCRIBE "作业描述" ,
       B.LAST_DATE ||' ' ||B.LAST_SEC "最后一次运行时间",
       B.NEXT_DATE ||' ' ||B.NEXT_SEC "下一次运行时间",
       B.WHAT "执行任务的PL/SQL块"
  FROM SYSJOB.SYSJOBS A,
       SYSJOB.USER_JOBS B
 WHERE A.ID=B.JOB;

b、调度查询

SELECT "ID" "调度ID号" ,
       "NAME" "调度的名称" ,
       "JOBID" "作业ID号" ,
       CASE WHEN "ENABLE"='1' THEN '启用' 
       WHEN "ENABLE"='0' THEN '不启用' 
       END "是否启用",
       CASE WHEN "TYPE" ='0' THEN '只执行一次' 
	        WHEN "TYPE"='1' THEN '按天执行' 
	        WHEN "TYPE"='2' THEN '按周执行' 
	        WHEN "TYPE"='3' THEN '某个月某一天执行' 
	        WHEN "TYPE"='4' THEN '一个月的第一周第几天执行' 
	        WHEN "TYPE"='5' THEN '一个月的第二周的第几天执行' 
	        WHEN "TYPE"='6' THEN '一个月的第三周的第几天执行' 
	        WHEN "TYPE"='7' THEN '一个月的第四周的第几天执行' 
	        WHEN "TYPE"='8' THEN '一个月的最后一周的第几天执行' 
       END "调度类型",
       CASE WHEN "TYPE" ='0' THEN '只执行一次' 
            WHEN "TYPE"='1' THEN '每隔' ||FREQ_INTERVAL ||'天执行' 
            WHEN "TYPE"='2' THEN '每' ||FREQ_INTERVAL ||'周执行' 
            WHEN "TYPE"='3' THEN '每隔' ||FREQ_INTERVAL ||'个月执行' 
       ELSE THEN '每隔' ||FREQ_INTERVAL ||'个月执行' 
       END "执行的频率",
       CASE WHEN "TYPE" ='0' THEN '只执行一次' 
            WHEN "TYPE"='1' THEN '每天执行' 
            WHEN "TYPE"='2' THEN "FREQ_SUB_INTERVAL" ||'(10进制)' 
       else THEN '第' ||"FREQ_SUB_INTERVAL" ||'天执行' 
       END "具体执行的频率" ,
       "FREQ_MINUTE_INTERVAL" "一天内每隔多少分钟执行一次",
       "STARTTIME" "调度的起始时间" ,
       "ENDTIME" "调度结束时间" ,
       --"SCHNAME" "驱动触发器所属的数据库模式名" ,--"TRIGNAME" "触发器名" ,
       "VALID" "是否合法"
       --"DESCRIBE" "注释信息"
  FROM SYSJOB.SYSJOBSCHEDULES;

c、作业步骤查询

  SELECT "EXEC_ID" "作业执行的ID号" ,
         "NAME" "作业名" ,
         "STEPNAME" "步骤名" ,
         "START_TIME" "步骤开始的时间",
         "END_TIME" "步骤结束的时间" ,
         --"ERRTYPE" ,
         "ERRCODE" "错误码" ,
         "ERRINFO" "错误描述信息",
         "RETRY_ATTEMPTS" "当前重试次数"
    FROM SYSJOB.SYSSTEPHISTORIES2 A
   WHERE ( SELECT COUNT(*)
             FROM SYSJOB.SYSSTEPHISTORIES2 B
            WHERE B.NAME = A.NAME
              AND B.EXEC_ID >= A.EXEC_ID ) <= 10 
ORDER BY A.START_TIME DESC,
         A.NAME;

6、SQL查询相关信息

a、实例启动以来长sql

SELECT top 20 "SQL_TEXT" "SQL文本",
         "EXEC_TIME"/1000 ||'秒' "执行时间" ,
         "FINISH_TIME" "执行结束时间",
         "N_RUNS" "执行次数"
    FROM V$SYSTEM_LONG_EXEC_SQLS
ORDER BY EXEC_TIME DESC;

b、占用内存大的sql

  select top 20 "SESS_ID" "SESSION的ID",
         --"SQL_ID" "语句的SQLID" ,
         "SQL_TEXT" "SQL文本" ,
         "MEM_USED_BY_K"/1024||'M' "使用的内存",
         "FINISH_TIME" "执行结束时间" ,
         "N_RUNS" "执行次数"
         --"SEQNO" "编号" ,--"TRX_ID" "事务号" ,
         --"SESS_SEQ" "会话序列号"
    from V$SYSTEM_LARGE_MEM_SQLS
order by mem_used_by_k desc;

7、其他

a、共享池相关

select "ADDR" "内存结构地址" ,
       "NAME" "内存池名称" ,
       "IS_SHARED" "是否共享" ,
       "CHK_MAGIC" "是否打开内存校验" ,
       "CHK_LEAK" "是否打开泄漏检查" ,
       "IS_OVERFLOW" "是否已经触发BAK_POOL的分配",
       --"IS_DSA_ITEM" ,
       "ORG_SIZE"/1024/1024 ||'M' "初始大小",
       "TOTAL_SIZE"/1024/1024 ||'M' "当前总大小",
       "RESERVED_SIZE"/1024/1024 ||'M' "已经分配大小",
       "DATA_SIZE"/1024/1024 ||'M' "分配的数据占用大小",
       "EXTEND_SIZE"/1024/1024 ||'M' "每次扩展的块大小",
       "TARGET_SIZE"/1024/1024 ||'M' "扩展的目标大小" ,
       "EXTEND_LEN" "扩展链长度" ,
       "N_ALLOC" "累计分配次数" ,
       "N_EXTEND_NORMAL" "TARGET范围内累计扩展次数" ,
       "N_EXTEND_EXCLUSIVE" "超出TARGET累计扩展次数",
       "N_FREE" "累计释放次数" ,
       "MAX_EXTEND_SIZE"/1024/1024||'M' "最大的扩展块",
       "MIN_EXTEND_SIZE"/1024/1024 ||'M' "最小的扩展块" ,
       "FILE_NAME" "源文件名" ,
       "FILE_LINE" "所在的代码行",
       "CREATOR" "创建者线程号"
  from V$MEM_POOL;

ps:后续会收集更多实用且常用的查询sql

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