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Hi,
I will explain what are the Oracle DBA Daily/Weekly/Monthly or Quarterly Routine Checklist and Tasks in this article.
Oracle DBA Daily Checklist
There are several routine checklist and tasks to do in Oracle database by DBA ( Database Administrator ). This checklist and tasks are as follows.
All scripts are valid for Single and RAC Database and Exadata.
If you don’t use RAC, then you can ignore scripts for other Nodes and SCAN Listener etc..
Oracle DBA Daily Scripts
1- Oracle instance(s) are running or not.
Use the following script to check Oracle Instance Processes
If RAC is used, then check all Instances of database.
Linux:
Check SMON or PMON process
[oracle@msddbadm01 ~]$ ps -ef | grep smon or [oracle@msddbadm01 ~]$ ps -ef | grep pmon Check all Instance of any database as follows. [oracle@msddbadm01 ~]$ srvctl status database -d <DB_NAME> [oracle@msddbadm01 ~]$ ps -ef | grep smon oracle 140550 1 0 2019 ? 00:01:49 asm_smon_+ASM1 root 147726 1 1 2019 ? 1-04:06:08 /u01/app/12.1.0.2/grid/bin/osysmond.bin oracle 156342 1 0 2019 ? 00:13:57 ora_smon_msd1 oracle 248609 246524 0 12:02 pts/0 00:00:00 grep smon [oracle@msddbadm01 ~]$ [oracle@msddbadm01 ~]$ srvctl status database -d msd Instance msd1 is running on node msddbadm01 Instance msd2 is running on node msddbadm02 [oracle@msddbadm01 ~]$
2- Local ( and SCAN ) listeners are running or not.
Use the following script to check Listeners
[oracle@msddbadm01 ~]$ lsnrctl status [oracle@msddbadm01 ~]$ srvctl status scan_listener
[oracle@msddbadm01 ~]$ lsnrctl status LSNRCTL for Linux: Version 18.0.0.0.0 - Production on 10-MAR-2020 14:42:31 Copyright (c) 1991, 2019, Oracle. All rights reserved. Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)) STATUS of the LISTENER ------------------------ Alias LISTENER Version TNSLSNR for Linux: Version 18.0.0.0.0 - Production Start Date 04-JAN-2020 17:36:35 Uptime 65 days 21 hr. 5 min. 55 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Parameter File /u01/grid/network/admin/listener.ora Listener Log File /u01/app/grid/diag/tnslsnr/msdidb01/listener/alert/log.xml Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER))) (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.63.34)(PORT=1521))) Services Summary... Service "+APX" has 1 instance(s). Instance "+APX1", status READY, has 1 handler(s) for this service... Service "+ASM" has 1 instance(s). Instance "+ASM1", status READY, has 1 handler(s) for this service... Service "+ASM_DATA" has 1 instance(s). Instance "+ASM1", status READY, has 1 handler(s) for this service... Service "+ASM_RECO" has 1 instance(s). Instance "+ASM1", status READY, has 1 handler(s) for this service... Service "MSDB" has 1 instance(s). Instance "MSDB1", status READY, has 1 handler(s) for this service... Service "MSDBXDB" has 1 instance(s). Instance "MSDB1", status READY, has 1 handler(s) for this service... Service "SYS$GGS_ADMIN.OGGQ$RCCB01.MSDB" has 1 instance(s). Instance "MSDB1", status READY, has 1 handler(s) for this service... Service "SYS$GGS_ADMIN.OGGQ$RCCB02.MSDB" has 1 instance(s). Instance "MSDB1", status READY, has 1 handler(s) for this service... The command completed successfully [oracle@msddbadm01 ~]$ [oracle@msddbadm01 ~]$ [oracle@msddbadm01 ~]$ [oracle@msddbadm01 ~]$ srvctl status scan_listener SCAN Listener LISTENER_SCAN1 is enabled SCAN listener LISTENER_SCAN1 is running on node msdidb03 SCAN Listener LISTENER_SCAN2 is enabled SCAN listener LISTENER_SCAN2 is running on node msdidb01 SCAN Listener LISTENER_SCAN3 is enabled SCAN listener LISTENER_SCAN3 is running on node msdidb06 [oracle@msddbadm01 ~]$
Oracle DBA Daily Routine Checklist
3- Check the Server Storage or Disk of Oracle database .
Check if ASM and File system disks size are enough or not.
Use the following script to check Filesystem disks.
Check Filesystem disks.
[oracle@msddbadm01 ~]$ df -h
Unix
[oracle@msddbadm01 ~]$ df -g
[oracle@msddbadm01 ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VGExaDb-LVDbSys1
30G 25G 3.8G 87% /
tmpfs 755G 6.5G 749G 1% /dev/shm
/dev/sda1 488M 28M 425M 7% /boot
/dev/mapper/VGExaDb-LVDbOra1
197G 109G 79G 59% /u01
/dev/sda2 254M 24M 231M 10% /boot/efi
/dev/mapper/VGExaDb-openvlv
15G 38M 14G 1% /usr/openv
/dev/asm/acfs_vol1-371
9.8T 4.8T 5.0T 49% /goldengate
[oracle@msddbadm01 ~]$
Check Oracle ASM diskgroups.
Use the following script to check Diskgroup size.
[grid@msdidb01 ~]$ asmcmd lsdg
[grid@msdidb01 ~]$ asmcmd ASMCMD> lsdg State Type Rebal Sector Logical_Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name MOUNTED HIGH Y 512 512 4096 4194304 1056964608 214081832 14680064 66467256 2 Y DATA/ MOUNTED HIGH N 512 512 4096 4194304 134507520 101014692 1868160 33048844 0 N RECO/ ASMCMD>
4- Check the Tablespaces for objects to extend if required.
Use the following script to check Tablespace usage
set pagesize 1000 linesize 180 tti 'Tablespace Usage Status' col "TOTAL(MB)" for 99,999,999.999 col "USAGE(MB)" for 99,999,999.999 col "FREE(MB)" for 99,999,999.999 col "EXTENSIBLE(MB)" for 99,999,999.999 col "FREE PCT %" for 999.99 col "USED PCT OF MAX %" for 999.99 col "NOTO" for 9999 col "OTO" for 999 select d.tablespace_name "NAME", d.contents "TYPE", nvl(a.bytes /1024/1024,0) "TOTAL(MB)", nvl(a.bytes - nvl(f.bytes,0),0)/1024/1024 "USAGE(MB)", nvl(f.bytes,0)/1024/1024 "FREE(MB)", nvl((a.bytes - nvl(f.bytes,0))/a.bytes * 100,0) "FREE PCT %", nvl(a.ARTACAK,0)/1024/1024 "EXTENSIBLE(MB)", nvl((a.bytes - nvl(f.bytes,0))/ (a.bytes + nvl(a.ARTACAK,0)) * 100,0) "USED PCT OF MAX %", a.NOTO, a.OTO from sys.dba_tablespaces d, (select tablespace_name, sum(bytes) bytes, sum(decode(autoextensible,'YES',MAXbytes - bytes,0 )) ARTACAK, count(decode(autoextensible,'NO',0)) NOTO, count(decode(autoextensible,'YES',0)) OTO from dba_data_files group by tablespace_name) a, (select tablespace_name, sum(bytes) bytes from dba_free_space group by tablespace_name) f where d.tablespace_name = a.tablespace_name(+) and d.tablespace_name = f.tablespace_name(+) and NOT (d.extent_management like 'LOCAL'and d.contents like 'TEMPORARY') UNION ALL select d.tablespace_name "NAME", d.contents "TYPE", nvl(a.bytes /1024/1024,0) "TOTAL(MB)", nvl(t.bytes,0)/1024/1024 "USAGE(MB)", nvl(a.bytes - nvl(t.bytes,0),0)/1024/1024 "FREE(MB)", nvl(t.bytes/a.bytes * 100,0) "FREE PCT %", nvl(a.ARTACAK,0)/1024/1024 "EXTENSIBLE(MB)", nvl(t.bytes/(a.bytes + nvl(a.ARTACAK,0)) * 100,0) "USED PCT OF MAX %", a.NOTO, a.OTO from sys.dba_tablespaces d, (select tablespace_name, sum(bytes) bytes, sum(decode(autoextensible,'YES',MAXbytes - bytes,0 )) ARTACAK, count(decode(autoextensible,'NO',0)) NOTO, count(decode(autoextensible,'YES',0)) OTO from dba_temp_files group by tablespace_name) a, (select tablespace_name, sum(bytes_used) bytes from v$temp_extent_pool group by tablespace_name) t where d.tablespace_name = a.tablespace_name(+) and d.tablespace_name = t.tablespace_name(+) and d.extent_management like 'LOCAL' and d.contents like 'TEMPORARY%' order by 3 desc; exit;
Result of script is as follows.
SQL> set pagesize 1000 linesize 180 SQL> tti 'Tablespace Usage Status' SQL> col "TOTAL(MB)" for 99,999,999.999 SQL> col "USAGE(MB)" for 99,999,999.999 SQL> col "FREE(MB)" for 99,999,999.999 SQL> col "EXTENSIBLE(MB)" for 99,999,999.999 SQL> col "FREE PCT %" for 999.99 SQL> col "USED PCT OF MAX %" for 999.99 SQL> col "NOTO" for 9999 SQL> col "OTO" for 999 SQL> select d.tablespace_name "NAME", 2 d.contents "TYPE", 3 nvl(a.bytes /1024/1024,0) "TOTAL(MB)", 4 nvl(a.bytes - nvl(f.bytes,0),0)/1024/1024 "USAGE(MB)", 5 nvl(f.bytes,0)/1024/1024 "FREE(MB)", 6 nvl((a.bytes - nvl(f.bytes,0))/a.bytes * 100,0) "FREE PCT %", 7 nvl(a.ARTACAK,0)/1024/1024 "EXTENSIBLE(MB)", 8 nvl((a.bytes - nvl(f.bytes,0))/ (a.bytes + nvl(a.ARTACAK,0)) * 100,0) "USED PCT OF MAX %", 9 a.NOTO, a.OTO 10 from sys.dba_tablespaces d, 11 (select tablespace_name, sum(bytes) bytes, 12 sum(decode(autoextensible,'YES',MAXbytes - bytes,0 )) ARTACAK, 13 count(decode(autoextensible,'NO',0)) NOTO, 14 count(decode(autoextensible,'YES',0)) OTO 15 from dba_data_files 16 group by tablespace_name) a, 17 (select tablespace_name, sum(bytes) bytes 18 from dba_free_space 19 group by tablespace_name) f 20 where d.tablespace_name = a.tablespace_name(+) 21 and d.tablespace_name = f.tablespace_name(+) 22 and NOT (d.extent_management like 'LOCAL'and d.contents like 'TEMPORARY') 23 UNION ALL 24 select d.tablespace_name "NAME", 25 d.contents "TYPE", 26 nvl(a.bytes /1024/1024,0) "TOTAL(MB)", 27 nvl(t.bytes,0)/1024/1024 "USAGE(MB)", 28 nvl(a.bytes - nvl(t.bytes,0),0)/1024/1024 "FREE(MB)", 29 nvl(t.bytes/a.bytes * 100,0) "FREE PCT %", 30 nvl(a.ARTACAK,0)/1024/1024 "EXTENSIBLE(MB)", 31 nvl(t.bytes/(a.bytes + nvl(a.ARTACAK,0)) * 100,0) "USED PCT OF MAX %", a.NOTO, a.OTO 32 from sys.dba_tablespaces d, 33 (select tablespace_name, sum(bytes) bytes, 34 sum(decode(autoextensible,'YES',MAXbytes - bytes,0 )) ARTACAK, 35 count(decode(autoextensible,'NO',0)) NOTO, 36 count(decode(autoextensible,'YES',0)) OTO 37 from dba_temp_files 38 group by tablespace_name) a, 39 (select tablespace_name, sum(bytes_used) bytes 40 from v$temp_extent_pool 41 group by tablespace_name) t 42 where d.tablespace_name = a.tablespace_name(+) 43 and d.tablespace_name = t.tablespace_name(+) 44 and d.extent_management like 'LOCAL' 45 and d.contents like 'TEMPORARY%' 46 order by 3 desc; exit; Tue Mar 10 page 1
Tablespace Usage Status
NAME TYPE TOTAL(MB) USAGE(MB) FREE(MB) FREE PCT % EXTENSIBLE(MB) USED PCT OF MAX % NOTO OTO
------------------------------ --------------------- --------------- --------------- --------------- ---------- --------------- ----------------- ----- ----
USERS PERMANENT 625,384.391 621,953.953 3,430.438 99.45 83,223.281 87.77 1 21
MSD_TBS PERMANENT 550,324.313 277,077.188 273,247.125 50.35 33,004,107.664 .83 0 1
DEFAULT_TBS1 PERMANENT 410,624.000 4,623.438 406,000.563 1.13 31,046,656.000 .01 0 1
TEMP TEMPORARY 393,214.828 7.000 393,207.828 .00 .984 .00 0 12
DEFAULTTBS PERMANENT 278,171.938 98,217.375 179,954.563 35.31 33,276,260.039 .29 0 1
UNDOTBS1 UNDO 22,180.000 314.063 21,865.938 1.42 141,659.922 .19 0 5
SYSAUX PERMANENT 13,670.000 12,562.313 1,107.688 91.90 19,097.984 38.34 0 1
SYSTEM PERMANENT 7,880.000 7,113.375 766.625 90.27 57,655.969 10.85 0 2
8 rows selected.
SQL>
5- Check the Recovery Size Area
Use the following script to check Recovery Size Area
set pagesize 1000 line 200 col "db_recovery_file_dest" for a32; col size_m for 999,999,999; col used_m for 999,999,999; col pct_used for 999; select name "db_recovery_file_dest",ceil(space_limit/1024/1024) TOTAL_MB, ceil( space_used /1024/1024) USED_MB, decode( nvl(space_used, 0),0,0,ceil(( space_used /space_limit) * 100)) PERCENTAGE(%) from v$recovery_file_dest order by 1; exit;
SQL> set pagesize 1000 line 200 SQL> col "db_recovery_file_dest" for a32; SQL> col size_m for 999,999,999; SQL> col used_m for 999,999,999; SQL> col pct_used for 999; SQL> select name "db_recovery_file_dest",ceil(space_limit/1024/1024) TOTAL_MB, ceil( space_used /1024/1024) USED_MB, 2 decode( nvl(space_used, 0),0,0,ceil(( space_used /space_limit) * 100)) PERCENTAGE 3 from v$recovery_file_dest 4 order by 1; exit; db_recovery_file_dest TOTAL_MB USED_MB PERCENTAGE(%) -------------------------------- ---------- ---------- ---------- +DATAC1 2048000 79 1 SQL>
SQL>
6-Check the alert log if a vital error exists or not ( Corruption )
Use the following script to check alertlog
set linesize 150 set pagesize 150 SELECT SUBSTR (MESSAGE_TEXT, 1, 300) MESSAGE_TEXT, COUNT (*) cnt FROM X$DBGALERTEXT WHERE (MESSAGE_TEXT LIKE '%ORA-%' OR UPPER (MESSAGE_TEXT) LIKE '%ERROR%') AND CAST (ORIGINATING_TIMESTAMP AS DATE) > SYSDATE - 1 GROUP BY SUBSTR (MESSAGE_TEXT, 1, 300); exit
SQL> SELECT SUBSTR (MESSAGE_TEXT, 1, 300) MESSAGE_TEXT, COUNT (*) cnt 2 FROM X$DBGALERTEXT 3 WHERE (MESSAGE_TEXT LIKE '%ORA-%' OR UPPER (MESSAGE_TEXT) LIKE '%ERROR%') 4 AND CAST (ORIGINATING_TIMESTAMP AS DATE) > SYSDATE - 1 5 GROUP BY SUBSTR (MESSAGE_TEXT, 1, 300); MESSAGE_TEXT -------------------------------------------------------------------------------- CNT ---------- Fatal NI connect error 12170. 63 Errors in file /u01/app/oracle/diag/rdbms/MSDB/MSDB/trace/MSDB_j000_33284.trc (incident=663845): ORA-01578: ORACLE data block corrupted (file # 7, block # 2241925) ORA-01110: data file 7: '+DATATEST/MSDB/DATAFILE/default_tbs.298.1031185857' ORA-26040: Data block was loaded using the NOLOGGING o MESSAGE_TEXT -------------------------------------------------------------------------------- CNT ---------- 1
7- Check the latest Archivelog and Full Backup are done or not
Use the following script to check Backups.
SELECT TO_CHAR (start_time, 'DD-MM-YYYY HH24:MI:SS') start_time, input_type, status, ROUND (elapsed_seconds / 3600, 1) time_hr,INPUT_BYTES/1024/1024/1024 IN_GB,OUTPUT_BYTES/1024/1024/1024 OUT_GB ,OUTPUT_DEVICE_TYPE FROM v$rman_backup_job_details WHERE START_TIME > SYSDATE - 3 ORDER BY start_time DESC;
SQL> set pagesize 1000 line 200 SQL> SQL> SELECT TO_CHAR (start_time, 'DD-MM-YYYY HH24:MI:SS') start_time, input_type, status, ROUND (elapsed_seconds / 3600, 1) time_hr,INPUT_BYTES/1024/1024/1024 IN_GB,OUTPUT_BYTES/1024/1024/1024 OUT_GB ,OUTPUT_DEVICE_TYPE FROM 2 v$rman_backup_job_details WHERE START_TIME > SYSDATE - 3 ORDER BY start_time DESC; START_TIME INPUT_TYPE STATUS TIME_HR IN_GB OUT_GB OUTPUT_DEVICE_TYP -------------------- ------------- ----------------------- ---------- ---------- ---------- ----------------- 10-03-2020 14:38:40 ARCHIVELOG COMPLETED 0 .874987602 .876464844 SBT_TAPE 09-03-2020 18:39:21 DB INCR COMPLETED 5.9 1281.08734 1202.46387 SBT_TAPE 08-03-2020 18:00:30 DB INCR COMPLETED 5.7 1279.00639 1200.3584 SBT_TAPE 08-03-2020 17:27:04 ARCHIVELOG COMPLETED 0 .60765028 .608642578 SBT_TAPE 07-03-2020 18:00:23 DB INCR COMPLETED 7.3 1279.00921 1200.35254 SBT_TAPE 07-03-2020 15:22:58 ARCHIVELOG COMPLETED 0 .625060558 .626220703 SBT_TAPE 73 rows selected. SQL>
8- Check any session blocking the other session ( blocking session and Lock control )
Use the following script to check Blocking session state.
select s1.username || '@' || s1.machine || ' ( SID=' || s1.sid || ' ) is blocking ' || s2.username || '@' || s2.machine || ' ( SID=' || s2.sid || ' ) ' AS blocking_status from gv$lock l1, gv$session s1, gv$lock l2, gv$session s2 where s1.sid=l1.sid and s2.sid=l2.sid and l1.BLOCK=1 and l2.request > 0 and l1.id1 = l2.id1 and l2.id2 = l2.id2 ;
9- Check the DBMS jobs running or not and check the status of the Jobs
Use the following script to check Scheduler jobs state.
-- Failed Scheduled Jobs SELECT owner, job_name,status,LOG_DATE, ERROR#, ( EXTRACT (SECOND FROM run_duration) /60 + EXTRACT (MINUTE FROM run_duration) + EXTRACT (HOUR FROM run_duration) * 60 + EXTRACT (DAY FROM run_duration) * 60 * 24) MINUTES,ADDITIONAL_INFO FROM dba_scheduler_job_run_details WHERE LOG_DATE > SYSDATE - 1 AND status != 'SUCCEEDED' ORDER BY 1 ASC, 4 DESC; -- Running and Succeeded Scheduled Jobs SELECT OWNER, JOB_NAME, LAST_START_DATE, STATE FROM DBA_SCHEDULER_JOBS WHERE LAST_START_DATE > SYSDATE - 1 AND STATE <> 'SCHEDULED';
10- Check the Dataguard is synchronized or not.
Use the following script to check Dataguard status
select process, client_process,thread#,sequence#,status from v$managed_standby where process like '%MRP%'; select name,value from v$dataguard_stats;
set lines 1000 select name,value from v$dataguard_stats;
NAME VALUE -------------------------------- ------------------------- transport lag +00 00:03:52 apply lag +00 00:03:54 apply finish time +00 00:00:00.001 estimated startup time 16 second
11- Check the Performance Page of Enterprise Manager or Enterprise Manager Cloud Control
Open Performance Page of Enterprise manager Cloud Control as follows to check Performance.
12- Check the TOP session and TOP activity of database.
Open TOP Activity Page of Enterprise manager Cloud Control as follows to check TOP Activity.
13- Detect lock objects
Use the following script to check Lock objects and tables.
SELECT B.Owner, B.Object_Name, A.Oracle_Username, A.OS_User_Name FROM gv$Locked_Object A, All_Objects B WHERE A.Object_ID = B.Object_ID;
14- Check the SQL query consuming lot of resources ( CPU and Disk Resources )
Use the following script to check TOP CPU and Disk SQL Statements.
select * from ( select ss.sql_text, a.SQL_ID, sum(CPU_TIME_DELTA), sum(DISK_READS_DELTA), count(*) from DBA_HIST_SQLSTAT a, dba_hist_snapshot s,v$sql ss where s.snap_id = a.snap_id and a.sql_id=ss.sql_id and s.begin_interval_time > sysdate -1 group by ss.sql_text,a.SQL_ID order by sum(CPU_TIME_DELTA) desc) where rownum<20;
15- Check the usage of physical RAM and SGA – Paging or Swapping exist or not.
[oracle@msddbadm01 ~]$ free -m
[oracle@msddbadm01 ~]$ free -m
total used free shared buffers cached
Mem: 772257 739605 32652 6174 491 397834
-/+ buffers/cache: 341279 430978
Swap: 24575 8035 16540
SQL> set linesize 150
SQL> set pagesize 150
SQL> select * from v$sgainfo;
NAME BYTES RES CON_ID
-------------------------------- ---------- --- ----------
Fixed SGA Size 29906520 No 0
Redo Buffers 207720448 No 0
Buffer Cache Size 1.1543E+11 Yes 0
In-Memory Area Size 2.1475E+10 No 0
Shared Pool Size 4.5634E+10 Yes 0
Large Pool Size 3758096384 Yes 0
Java Pool Size 536870912 Yes 0
Streams Pool Size 2.6844E+10 Yes 0
Shared IO Pool Size 536870912 Yes 0
Data Transfer Cache Size 0 Yes 0
Granule Size 536870912 No 0
Maximum SGA Size 2.1445E+11 No 0
Startup overhead in Shared Pool 1180135528 No 0
Startup NUMA Shared Pool memory 1.0737E+10 No 0
Free SGA Memory Available 536870912 0
15 rows selected.
SQL> select * from v$sgastat;
POOL NAME BYTES CON_ID
-------------- -------------------------- ---------- ----------
fixed_sga 29906520 0
buffer_cache 1.1489E+11 0
log_buffer 207720448 0
shared_io_pool 536870912 0
shared pool free memory 6701646384 0
shared pool v_inc_meter_info_problem 1728 0
shared pool kghpinfo freelist 192 0
shared pool enqueue_hash 222864 0
shared pool kmgsb circular statistics 162560 0
shared pool SGA Obsolete Param Source 24 0
16- Check Log Switch and Archivelog generation frequency.
You can query and list the Log Switch ( Archivelog ) Frequency map according to per hour and daily as follows.
select to_char(first_time,'YYYY-MON-DD') day, to_char(sum(decode(to_char(first_time,'HH24'),'00',1,0)),'9999') "00", to_char(sum(decode(to_char(first_time,'HH24'),'01',1,0)),'9999') "01", to_char(sum(decode(to_char(first_time,'HH24'),'02',1,0)),'9999') "02", to_char(sum(decode(to_char(first_time,'HH24'),'03',1,0)),'9999') "03", to_char(sum(decode(to_char(first_time,'HH24'),'04',1,0)),'9999') "04", to_char(sum(decode(to_char(first_time,'HH24'),'05',1,0)),'9999') "05", to_char(sum(decode(to_char(first_time,'HH24'),'06',1,0)),'9999') "06", to_char(sum(decode(to_char(first_time,'HH24'),'07',1,0)),'9999') "07", to_char(sum(decode(to_char(first_time,'HH24'),'08',1,0)),'9999') "08", to_char(sum(decode(to_char(first_time,'HH24'),'09',1,0)),'9999') "09", to_char(sum(decode(to_char(first_time,'HH24'),'10',1,0)),'9999') "10", to_char(sum(decode(to_char(first_time,'HH24'),'11',1,0)),'9999') "11", to_char(sum(decode(to_char(first_time,'HH24'),'12',1,0)),'9999') "12", to_char(sum(decode(to_char(first_time,'HH24'),'13',1,0)),'9999') "13", to_char(sum(decode(to_char(first_time,'HH24'),'14',1,0)),'9999') "14", to_char(sum(decode(to_char(first_time,'HH24'),'15',1,0)),'9999') "15", to_char(sum(decode(to_char(first_time,'HH24'),'16',1,0)),'9999') "16", to_char(sum(decode(to_char(first_time,'HH24'),'17',1,0)),'9999') "17", to_char(sum(decode(to_char(first_time,'HH24'),'18',1,0)),'9999') "18", to_char(sum(decode(to_char(first_time,'HH24'),'19',1,0)),'9999') "19", to_char(sum(decode(to_char(first_time,'HH24'),'20',1,0)),'9999') "20", to_char(sum(decode(to_char(first_time,'HH24'),'21',1,0)),'9999') "21", to_char(sum(decode(to_char(first_time,'HH24'),'22',1,0)),'9999') "22", to_char(sum(decode(to_char(first_time,'HH24'),'23',1,0)),'9999') "23" from v$log_history group by to_char(first_time,'YYYY-MON-DD');
Query result is as follows.
Do you want to learn Oracle Database for Beginners, then read the following articles.
Oracle Tutorial | Oracle Database Tutorials for Beginners ( Junior Oracle DBA )
Do you want to use Oracle DBA Scripts All in One For Oracle RAC, then read the following articles.
Useful Oracle RAC (Cluster Command) Scripts | Oracle DBA Scripts All in One -1
Making me feel nostalgic….
Thanks..
wow ,thanks it’s very useful . but could you explain why only 300 character and what should i do to display the time of error exactly
which error, could you share the details ?
another question , do i need actually in real time need to check the size of table spaces and archive log daily , i thinks it maybe checked weekly.thanks
i mean this check no 6
****** Check the alert log if a vital error exists or not
the select statement substring the text msg and display only 300 character .
Then change 300 to different value as follows.
SQL> SELECT SUBSTR (MESSAGE_TEXT, 1, 300) MESSAGE_TEXT, COUNT (*) cnt
FROM X$DBGALERTEXT
WHERE (MESSAGE_TEXT LIKE ‘%ORA-%’ OR UPPER (MESSAGE_TEXT) LIKE ‘%ERROR%’)
AND CAST (ORIGINATING_TIMESTAMP AS DATE) > SYSDATE – 1
GROUP BY SUBSTR (MESSAGE_TEXT, 1, 30000);
This gives the overall checklist for daily activity. Need help what to add for Weekly and Monthly Checklist
yes please. we need help for weekly and montly checklist. I also noticed that you used an enterprise manager, how did you do that please?