SQL> SELECT al.thrd “Thread”, almax “Last Seq Received”, lhmax “Last Seq Applied” FROM (select thread# thrd, MAX(sequence#) almax FROM v$archived_log WHERE resetlogs_change#=(SELECT resetlogs_change# FROM v$database) GROUP BY thread#) al, (SELECT thread# thrd, MAX(sequence#) lhmax FROM v$log_history WHERE resetlogs_change#=(SELECT resetlogs_change# FROM v$database) GROUP BY thread#) lh WHERE al.thrd = lh.thrd; Thread Last Seq Received Last Seq […]
All posts by Skant Gupta
CHECK THE MESSAGES/ERRORS IN STANDBY DATABASE
set pagesize 2000 set lines 2000 col MESSAGE for a90 select message,timestamp from V$DATAGUARD_STATUS where timestamp > sysdate – 1/6; MESSAGE TIMESTAMP —————————————————————————————— ——— RFS[48]: No standby redo logfiles created 05-AUG-15 Media Recovery Log /uv1010/arch/MRSX/arch_MRSX_779539386_1_49481.log 05-AUG-15 Media Recovery Waiting for thread 1 sequence 49482 (in transit) 05-AUG-15 RFS[48]: No standby redo logfiles created 05-AUG-15 Media […]
CHECK THE NUMBER OF ARCHIVES GETTING GENERATING ON HOURLY BASIS:
SELECT TO_CHAR(TRUNC(FIRST_TIME),’Mon DD’) “DG Date”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’00’,1,0)),’9999′) “12AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’01’,1,0)),’9999′) “01AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’02’,1,0)),’9999′) “02AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’03’,1,0)),’9999′) “03AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’04’,1,0)),’9999′) “04AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’05’,1,0)),’9999′) “05AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’06’,1,0)),’9999′) “06AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’07’,1,0)),’9999′) “07AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’08’,1,0)),’9999′) “08AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’09’,1,0)),’9999′) “09AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’10’,1,0)),’9999′) “10AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’11’,1,0)),’9999′) “11AM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’12’,1,0)),’9999′) “12PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’13’,1,0)),’9999′) “1PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’14’,1,0)),’9999′) “2PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’15’,1,0)),’9999′) “3PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’16’,1,0)),’9999′) “4PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’17’,1,0)),’9999′) “5PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’18’,1,0)),’9999′) “6PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’19’,1,0)),’9999′) “7PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’20’,1,0)),’9999′) “8PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’21’,1,0)),’9999′) “9PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’22’,1,0)),’9999′) “10PM”, TO_CHAR(SUM(DECODE(TO_CHAR(FIRST_TIME,’HH24′),’23’,1,0)),’9999′) “11PM” FROM V$LOG_HISTORY […]
Rolling Forward Standby Database When Archives Missing In Primary In 12c
There can be situation , in dataguard setup, where archive logs are missing from primary , before it was being shipped to standby . Till 11g , we can make standby db sync with primary by taking an incremental backup from primary and apply the same in standby . But with 12c , a new […]
Convert Physical Standby To Snapshot Standby Database
What is snapshot standby: Snapshot standby is a feature in Oracle 11g that allows doing a read-write operation on the standby database. i. e we can convert the physical standby database to snapshot standby. On that, we can do all types of testing or can be used as a development database (which is an exact […]
How to apply PSU patch on standby database
To apply psu patch on physical standby database setup, 1st patch need to be applied on standby, and then on primary. Below are the steps. Download patch from oracle support. Check the database_role for both dbs PRIMARY> select database_role from v$database; DATABASE_ROLE —————- PRIMARY STANDBY> select database_role from v$database; SDATABASE_ROLE —————- PHYSICAL STANDBY 2.Run below […]
ORA-01274: cannot add data file
PROBLEM: After adding a datafile in primary database, recovery process in standby stopped with below error. — Primary database: SQL> alter tablespace prim add datafile size 1g; Tablespace altered. — Error in alert log of standby database File #5 added to control file as ‘UNNAMED00005’ because the parameter STANDBY_FILE_MANAGEMENT is set to MANUAL The file should be […]
Enabling Flashback Database in Oracle
Oracle Flashback Database, allows to quickly recover the entire database from logical data corruptions or user errors. It is very similar to PITR (Point In Time Recovery) which puts back the database to a state at a particular time in recent past. 1. Place your database in mount stage. sql>shutdown immediate sql>startup mount 2. Set DB_FLASHBACK_RETENTION_TARGET […]
ORA-15032: Not All Alterations Performed
While setting attribute on a ASM diskgroup, we got below error. oracle@crmcpredb1:~$ echo $ORACLE_SID +ASM1 oracle@crmcpredb1:~$ sqlplus / as sysdba SQL*Plus: Release 12.1.0.2.0 Production on Fri Sep 16 11:19:25 2016 Copyright (c) 1982, 2014, Oracle. All rights reserved. Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 – 64bit Production With the Real Application Clusters […]
Enable Archive Log Mode In Oracle RAC
1. stop the database service. srvctl stop database -d RAC 2. start the database in mount state. srvctl start database -d RAC -o mount 3. enable archive log mode. SQL> alter database archivelog; Database altered. 4. Restart the database service (using srvctl) srvctl stop database -d RAC srvctl start database -d RAC 5. set the […]