Data Guard :: GAP Archived Log Transport To Database
May 26, 2012
The GAP archived log can not transport to target database by auto, how can i do?
Sun May 27 06:32:59 2012
FAL[client]: Failed to request gap sequence
GAP - thread 1 sequence 161-161
DBID 1820932955 branch 775456988
FAL[client]: All defined FAL servers have been attempted.
-------------------------------------------------------------
Check that the CONTROL_FILE_RECORD_KEEP_TIME initialization parameter is defined to a value that is sufficiently large enough to maintain adequate log switch information to resolve archivelog gaps.
1> Does dataguard in 10g use ftp/rsh to transfer archived log files to standby database or some other protocol?
2> In my primary database, archives are getting generated normally, there is no error in alert log file. But archives are not getting transferred to standby database. I am able to connect through sys user from primary server to standby database & vice versa.
Also, tnsping is working fine.
All was working fine till 2 days back & no parameter has been changed from database side. I am not able to transfer the file manually through FTP to standby server. Does it is the problem? Or dataguard doesnt use FTP protocol to transfer the files?
OS read hat, oracle enterprise edition 11g release 2, dataguard 2 physical standby's
everything works fine but since 1 day we get following warnings from dataguard on the primary server:
SELECT * FROM V$DATAGUARD_STATUS;
FACILITY SEVERITY DEST_ID MESSAGE_NUM ERROR_CODE CAL TIMESTAM ------------------------ ------------- ---------- ----------- ---------- --- -------- MESSAGE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Log Transport Services Warning 0 309911 0 NO 01.11.12 RTC returned 2, disabling RTC for next 2 I/Os.
in the alert log it looks like this:
RTC returned 2, disabling RTC for next 2 I/Os. Thu Nov 01 12:09:46 2012 RTC returned 2, disabling RTC for next 2 I/Os. Re-enabling RTC following backoff interval 2. Re-enabling RTC following backoff interval 2. RTC returned 2, disabling RTC for next 2 I/Os. RTC returned 2, disabling RTC for next 2 I/Os. Re-enabling RTC following backoff interval 2. Re-enabling RTC following backoff interval 2. Thu Nov 01 12:11:16 2012 RTC returned 2, disabling RTC for next 2 I/Os. Re-enabling RTC following backoff interval 2.
I got a database on dataguard and my primary (db1) is shipping files to my standby (db2) with no problems.However, when I query:
select sequence#, status, applied from v$archived_log;
I see this: SEQUENCE# S APP ---------- - --- 4 A YES 5 A YES 6 A YES 7 A YES 8 A YES 9 A YES 10 A YES 11 A YES 12 A YES 13 A YES 14 A YES [code]....
So I did an alter system switch logfile on db1 then looked again and I can see new archived logs being applied.I thought all archived logs had to be applied on the standby since this is the very foundation of the standby database.Am I going to run in trouble later if I have a failover (unsynchronized database)
1) How to copy the ARCHIVED LOG FILE from Primary to DR location. Where if the DR is having the file already, how to SKIP that Particular Archived log file? 2) I have Checked with the FILE_TRANSFER DBMS package, but it gives the error if any file existing already.
I wanted to make a script for applying the Archived log File in to DR by certain interval.
1) I will use the below view for finding the SEQUENCE so far applied.select sequence# from v$log_archive. 2) But how i can compare with the archive log files available in physical location with the above mentioned view.
eg:- the above view shows, the till the sequence 46789 is applied.And in the DR physical Location available sequences are 46795. which means 6 more archived log files are more, which are not applied into the DR so far.
Is this possible to run a direct impdp with database link for transport tablespace instead of first creating export dump and then using impdp.
I tried the below command and it shows up error.I have gone through the entire Oracle docs but could not find the exact command with network link for transport tablespace.
I got a primary database with a logical standby database running Oracle 11g. I got two client applications, one is the production site pointing to the primary one, another one is just a backup site pointing to the logical one.Things will only be written into the primary database every mid night and client applications can only query the database but not add, update nor delete.And now, I want to apply the latest patch on both of my databases. I am also the DNS administrator, I can make the name server pointing to the backup site instead of the production one.I want to firstly apply the patch on the logical one, and then the physical one.
I found some reference which explains how to apply patches by adopting "Rolling Upgrade Method". however, I want to avoid doing any "switch over" mentioned in the reference because I can make use of name server. Can I just apply patches as the following way?
1)Stop SQL apply 2)Apply patches on logical standby database 3)let the name server point to the backup site 4)Apply patches on the primary database 5)Start SQL apply 6)Let the name server point back to the production site
If flashback is enable in physical standby database 1. If we failover at 11AM can I flash back NEW primary database to 6 AM ? 2. if I convert physically standby database to snapshot standby database at 11AM , Can I flashback snapshot standby database to 6 AM and do some works on it (DML operations) then converting the snapshot standby database into physical standby database ?
creating the standby database from Active database using RMAN and getting the below issue after i executed the duplicate command.
Version of Database:11g(11.2.0.1.0) Operating System:Linux 5 Error: RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of Duplicate Db command at 12/21/2012 17:26:52 RMAN-03015: error occurred in stored script Memory Script RMAN-04006: error from auxiliary database: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor [code]....
provide any work arounds to proceed further in creating the standby database.
I have installed oracle 11g standard edition one and created both primary and standby database. now i want to know how to switch(convert) primary database to standby database.
i have configured physical standby in my local system, to check logshipping i created a table at primary db, wen i tried to check in standby, it says table does not exist..below are primary & standby alert entries..
Primary alert log
Fatal NI connect error 12514, connecting to: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.0.98)(PORT=1522))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=STAND)(SERVER=dedicat ed)(CID=(PROGRAM=d:oracle11gappadministratorproduct11.1.0db_1inORACLE.EXE)(HOST=A960M)(USER=SYSTEM))(SERVER=dedicated))) VERSION INFORMATION: TNS for 64-bit Windows: Version 11.1.0.6.0 - Production
Here we have a data guard environment with db1(db_unique_name) as primary and db2(db_unique_name) as physical standby database. Also we configured one schema on a third machine as catalog database using following steps. The steps executed in catalog database(appsdb):
SQL> create tablespace rmancatlog_tbs datafile '/u01/app/oracle/oradata/NEW/rman_catalog.dbf' size 500M autoextend off extent management local segment space management auto;
SQL> create user rman identified by oracle 2 default tablespace rmancatlog_tbs 3 quota unlimited on rmancatlog_tbs 4 ;SQL> GRANT connect, resource, recovery_catalog_owner TO rman;
RMAN> create catalog; recovery catalog created
Added tns entries of catalog database in primary and standby. Then from primary database we tried to register to catalog database. It is showing that it is registering. But every query afterwards in rman is throwing the error. Below are the steps and error:
[oracle@db1 ~]$ rman target sys/oracle catalog rman/oracle@appsdb Recovery Manager: Release 10.2.0.3.0 - Production on Mon Aug 13 21:39:32 2012 Copyright (c) 1982, 2005, Oracle. All rights reserved. connected to target database: NIOS (DBID=1589015669) connected to recovery catalog database [code]....
1) scn differs wrt primary in standby (i checked, 1day difference), how to make scn same?
2)i created a table in primary, its not refelecting in standby, (below i ve pasted alertlog entries)
ORA-27041: unable to open file OSD-04002: unable to open file O/S-Error: (OS 2) The system cannot find the file specified. Errors in file d:oracle11gappadministratordiag dbmsstandstand racestand_dbw0_6916.trc: ORA-01157: cannot identify/lock data file 2 - see DBWR trace file ORA-01110: data file 2: 'D:ORACLE11GAPPADMINISTRATORORADATASTANDSYSAUX01.DBF'
[code]....
3)wen i try to open standby database in read only mode gives below error..
ERROR at line 1: ORA-16004: backup database requires recovery ORA-01157: cannot identify/lock data file 1 - see DBWR trace file ORA-01110: data file 1: 'D:ORACLE11GAPPADMINISTRATORORADATASTANDSYSTEM01.DBF'
I want to get the execute plan of a sql in standby database(read only),but failed,how can i do?
SQL> explain plan for select count(1) from hxl.tb_objects; explain plan for select count(1) from hxl.tb_objects * ERROR at line 1: ORA-00604: error occurred at recursive SQL level 2 ORA-16000: database open for read-only access
I have a clients who currently implementing an application that using Oracle 10g in 20 distributed location. Each location will have its own database server and locally managed. I plan to create a Disaster Recovery (DR) Centre for this client in centralised location. I plan to setup 20 Application Server but only one database server with 20 instances. My question, can the Dataguard manage the replication between 20 database (with single instances) and single database (with 20 instances? The reason we design such way is to reduce the license cost of Oracle.
DB1 <Primary> - Production DB2 <Physial Standby> - DR
I will need to startup my DB2 in DR segment for testing.If i perform the below, will it affect my Production DB? I need it to be up and running as well.
DR: recover managed standby database cancel; shutdown immediate; startup nomount; alter database mount standby database; recover standby database until cancel; alter database activate standby database;
I am planning to use Data Guard facility in Oracle 10g database.
1) I would like to have a standby database, which can be used if the primary goes down and also for reporting and other queries (read-Only). 2) What is the difference between Physical and Logical standby database. I have to explain non-technical users (management) regarding this. 3) What is Sync and Async redo log apply? 4) When i manipulate data (Insert,Delete,Update) in logical standby database, will these changes reflect in Primary database synchronously? 5) Which type of REDO APPLY is better: Managed Recovery Process(MRP) or Real Time Apply(RTA)? 6) can the redo data be deleted if its obsolete or is it deleted automatically by oracle? 7) If i want to take backup, should i take it from primary or standby database? If standby, then the database should be in which mode (Read-only or Recovery Mode)
I need to drop standby database completeley and rebuilt physical standby for the same database. We identified there are lot of inconsistencies between primary and standby. How do i need to remove the standby? And what is the best procedure?
I was able to create the standby database on different server with the same name for the primary and standby database but I want to know that can I create a standby database with different database name than that of the primary database server.
we have a created primary and physical standby databases. Before the switchover the application connected to dataguard allows updates on the database. However after the switchover, it allows read-only access and we are unable to update. Any comments prima-facie ?
I was using physical standby but my primary database had had some HW issue.So I had activated standby database to handle production.During 3 months, standby database was our live database and our old primary was unavailable.Now HW issue on primary has been fixed.And I want to set again my old configuration : means set primary and standby db.
