Hi
DBA-Mates,
As we have already seen the DataGuard Concepts and details. Today, I am going to share the Dataguard setup. How to do dataguard setup and configuarions.
Here, in these documents, I show you guys step by step dataguard steup and configuration which I have done in my real time environments.
Setup:
Tar the database software (ie., tech stack) of the primary database,
As we have already seen the DataGuard Concepts and details. Today, I am going to share the Dataguard setup. How to do dataguard setup and configuarions.
Here, in these documents, I show you guys step by step dataguard steup and configuration which I have done in my real time environments.
Setup:
Configure
Primary Database Tier
Preparing
the Primary Database for Standby Database Creation
If the database is
running on pfile then create spfile and make sure that the database is running
on spfile so that we can set the parameter when the database is up and running.
Check whether the database is in archive log mode or not.
Set
initialization parameters on primary database
Before setting the
parameters we must know the difference between few parameters on primary and
standby databases
Primary
Database Standby database
SID
PROD PROD
DB_UNIQUE_NAME
PROD PRDSTBY
Oracle
Net Service name PROD PRDSTBY
The database SID is
same on both the primary and physical standby databases.
Connect
to Primary database server
If we are using spfile
we have to set all the parameters using “Alter system set”
syntax and if pfile is being
used then we need to
make the changes in the pfile manually and
bounce the database to take effect.
Log_archive_config
='dg_config=(prod,prdstby)'
Log_archive_dest_1
='location=/test2/archives'
Log_archive_dest_2
='service=prdstby lgwr async valid_for=(online_logfiles,primary_role)
db_unique_name=prdstby'
Log_archive_dest_state_2
='defer'
Fal_server
='prdstby'
Fal_client ='prod'
REMOTE_LOGIN_PASSWORDFILE='EXCLUSIVE'
Standby_file_management
='auto'
Create
standby redolog
Create standby redo
logs on the primary database to support the standby role. Standby redo logs are additional redo log
groups, with a different type. You can only have as many redo log groups
overall as the maximum setting for
your database for logfile groups and logfile members.
Standby redo log
groups should be multiplexed in the same manner as online redo log groups.
The standby redo logs must be the same size as the primary database online redo logs.
The standby redo logs must be the same size as the primary database online redo logs.
Query
to find the standby redo-logs that have to be created depending on the current
redologs
select
'alter database add standby logfile '''||
regexp_substr(MEMBER,'/.+/')||'stdby_'||
regexp_replace(member,regexp_substr(MEMBER,'/.+/'),'')||
'''
size '||bytes||';' "Create Standby redo"
from
v$logfile lf , v$log l
where
l.group# = lf.group#
union
all
select
'alter database add standby logfile '''||
regexp_substr(MEMBER,'/.+/')||'stdby_redo0'||(select
max(group#)+1 from v$log)||'.rdo'||
'''
size '||bytes||';' "Create Standby redo"
from
v$logfile lf , v$log l
where
l.group# = lf.group#
and
rownum <=2
/
SQL>
alter database add standby logfile thread 1 group 3 (
'/test1/db/apps_st/data/stdbylog03a.dbf',
'/test1/db/apps_st/data/stdbylog03b.dbf')
size 1G;
SQL>
alter database add standby logfile thread 1 group 4 (
'/test1/db/apps_st/data/stdbylog04a.dbf',
'/test1/db/apps_st/data/stdbylog04b.dbf')
size 1G;
SQL>
alter database add standby logfile thread 1 group 5 (
'/test1/db/apps_st/data5/stdbylog05a.dbf',
'/test1/db/apps_st/data5/stdbylog05b.dbf')
size 1G;
[oraprod@proddb
~]$ cd $ORACLE_HOME/appsutil/scripts/PROD_proddb/
[oraprod@proddb
PROD_proddb]$ perl adpreclone.pl dbTier
Copyright (c) 2002
Oracle Corporation
Redwood Shores,
California, USA
Oracle Applications
Rapid Clone
Version 12.0.0
adpreclone Version
120.20.12010000.2
Enter the APPS User Password:
Running:
perl
/test1/db/tech_st/11.1.0/appsutil/bin/adclone.pl
java=/test1/db/tech_st/11.1.0/appsutil/jre mode=stage
stage=/test1/db/tech_st/11.1.0/appsutil/clone
component=dbTier method=CUSTOM
dbctx=/test1/db/tech_st/11.1.0/appsutil/PROD_proddb.xml
showProgress
APPS Password :
Beginning database
tier Stage - Wed May 28 15:24:31 2014
/test1/db/tech_st/11.1.0/appsutil/jre/bin/java
-Xmx600M -DCONTEXT_VALIDATED=false
-Doracle.installer.oui_loc=/test1/db/tech_st/11.1.0/oui
-classpath
/test1/db/tech_st/11.1.0/lib/xmlparserv2.jar:/test1/db/tech_st/11.1.0/jdbc/lib/ojdbc6.jar:/test1/db/tech_st/11.1.0/ap
psutil/java:/test1/db/tech_st/11.1.0/oui/jlib/OraInstaller.jar:/test1/db/tech_st/11.1.0/oui/jlib/ewt3.jar:/test1/db/tech
_st/11.1.0/oui/jlib/share.jar:/test1/db/tech_st/11.1.0/oui/jlib/srvm.jar:/test1/db/tech_st/11.1.0/jlib/ojmisc.jar
oracle.apps.ad.clone.StageDBTier
-e /test1/db/tech_st/11.1.0/appsutil/PROD_proddb.xml -stage
/test1/db/tech_st/11.1.0/appsutil/clone
-tmp /tmp -method CUSTOM -showProgress
APPS Password :
Log file located at
/test1/db/tech_st/11.1.0/appsutil/log/PROD_proddb/StageDBTier_05281524.log
- 50% completed
Completed Stage...
Wed May 28 15:25:56
2014
Tar the database software (ie., tech stack) of the primary database,
Fetch.
[oraprod@proddb
db]$ tar -czvf /nfsbackup/erp/prod_db_techstack_28may2014.tar.gz tech_st/
Copy the tar file to
the standby server
[oraprod@proddb
db]$ scp /nfsbackup/erp/prod_db_techstack_28may2014.tar.gz
orastby@10.10.10.123:/files/
Configure
Standby Database Tier
Connect
to Standby database server
[orastby@ebs bin]$ cd
/files/tech_st/11.1.0/appsutil/clone/bin
[orastby@ebs
bin]$ perl adcfgclone.pl dbtechstack
Copyright (c) 2002
oracle corporation
Redwood shores,
california, usa
Oracle applications
rapid clone
Version 12.0.0
Adcfgclone version
120.31.12010000.1
Enter the apps password :
Running:
/files/tech_st/11.1.0/appsutil/clone/bin/../jre/bin/java
-xmx600m -cp
/files/tech_st/11.1.0/appsutil/clone/jlib/java:/files/tech_st/11.1.0/appsutil/clone/jlib/xmlparserv2.jar:/files/tech_st/
11.1.0/appsutil/clone/jlib/ojdbc5.jar
oracle.apps.ad.context.CloneContext -e
/files/tech_st/11.1.0/appsutil/clone/bin/../context/db/ctxorig.xml
-validate -pairsfile /tmp/adpairsfile_6635.lst
-stage
/files/tech_st/11.1.0/appsutil/clone -dbtechstack 2>
/tmp/adcfgclone_6635.err; echo $? >
/tmp/adcfgclone_6635.res
Log file located at
/files/tech_st/11.1.0/appsutil/clone/bin/clonecontext_0528171240.log
Provide the values
required for creation of the new database context file.
Target system hostname
(virtual or normal) [ebs] :
Target instance is rac
(y/n) [n] :
Target system database
sid : prod
Target system base
directory : /files/
Target system
utl_file_dir directory list : /usr/bin/
Number of data_top's
on the target system [5] :
Target system data_top
directory 1 [/test1/db/apps_st/data] : /files/apps_st/data
Target system data_top
directory 2 [/test1/db/apps_st/data2] : /files/apps_st/data2
Target system data_top
directory 3 [/test1/db/apps_st/data4] : /files/apps_st/data4
Target system data_top
directory 4 [/test1/db/apps_st/data5] : /files/apps_st/data5
Target system data_top
directory 5 [/test1/db/apps_st/data3] : /files/apps_st/data3
Target system rdbms
oracle_home directory [/files/db/tech_st/11.1.0] : /files/tech_st/11.1.0
Do you want to
preserve the display [proddb:0.0] (y/n) ? : n
Target system display
[ebs:0.0] :
Do you want the the
target system to have the same port values as the source system (y/n) [y] ? :
Complete port information
available at /files/tech_st/11.1.0/appsutil/clone/bin/out/prod_ebs/portpool.lst
Backing up
/files/tech_st/11.1.0/appsutil/prod_ebs.xml to
/files/tech_st/11.1.0/appsutil/prod_ebs.xml.bak
Creating the new
database context file from :
/files/tech_st/11.1.0/appsutil/template/adxdbctx.tmp
The new database
context file has been created :
/files/tech_st/11.1.0/appsutil/prod_ebs.xml
Log file located at
/files/tech_st/11.1.0/appsutil/clone/bin/clonecontext_0528171240.log
Check clone context
logfile /files/tech_st/11.1.0/appsutil/clone/bin/clonecontext_0528171240.log
for details.
Running rapid clone
with command:
Perl
/files/tech_st/11.1.0/appsutil/clone/bin/adclone.pl
java=/files/tech_st/11.1.0/appsutil/clone/bin/../jre
mode=apply
stage=/files/tech_st/11.1.0/appsutil/clone component=dbtechstack method=custom
dbctxtg=/files/tech_st/11.1.0/appsutil/prod_ebs.xml
showprogress contextvalidated=true
Running:
Perl
/files/tech_st/11.1.0/appsutil/clone/bin/adclone.pl java=/files/tech_st/11.1.0/appsutil/clone/bin/../jre
mode=apply
stage=/files/tech_st/11.1.0/appsutil/clone component=dbtechstack method=custom
dbctxtg=/files/tech_st/11.1.0/appsutil/prod_ebs.xml
showprogress contextvalidated=true
Apps password :
Beginning rdbms home
apply - wed may 28 17:13:39 2014
/files/tech_st/11.1.0/appsutil/clone/bin/../jre/bin/java
-xmx600m -dcontext_validated=true
-doracle.installer.oui_loc=/files/tech_st/11.1.0/oui
-classpath
/files/tech_st/11.1.0/appsutil/clone/jlib/xmlparserv2.jar:/files/tech_st/11.1.0/appsutil/clone/jlib/ojdbc6.jar:/files/te
ch_st/11.1.0/appsutil/clone/jlib/java:/files/tech_st/11.1.0/appsutil/clone/jlib/oui/orainstaller.jar:/files/tech_st/11.1.
0/appsutil/clone/jlib/oui/ewt3.jar:/files/tech_st/11.1.0/appsutil/clone/jlib/oui/share.jar:/files/tech_st/11.1.0/appsuti
l/clone/jlib/oui/srvm.jar:/files/tech_st/11.1.0/appsutil/clone/jlib/ojmisc.jar
oracle.apps.ad.clone.ApplyDBTechStack
-e /files/tech_st/11.1.0/appsutil/prod_ebs.xml -stage
/files/tech_st/11.1.0/appsutil/clone
-showprogress
Apps password : log
file located at
/files/tech_st/11.1.0/appsutil/log/prod_ebs/applydbtechstack_05281713.log
/ 4% completed
Completed apply...
Wed may 28 17:15:14
2014
Starting database
listener for prod:
Running:
/files/tech_st/11.1.0/appsutil/scripts/prod_ebs/addlnctl.sh
start prod
You are running
addlnctl.sh version 120.1.12010000.2
Logfile:
/files/tech_st/11.1.0/appsutil/log/prod_ebs/addlnctl.txt
Starting listener
process prod ...
Addlnctl.sh: exiting
with status 0
[orastby@ebs
bin]$
[orastby@ebs
bin]$ cd $ORACLE_HOME
[orastby@ebs
11.1.0]$ ln -s /files/tech_st/11.1.0/prod_ebs.env /home/orastby/prod_ebs.env
[orastby@ebs
11.1.0]$ . Prod_ebs.env
[orastby@ebs
11.1.0]$ cd $oracle_home/network/admin/prod_ebs
[orastby@ebs
11.1.0]$ vi listener.ora
Metalink
id for listener blocked status before doing rman duplicate: connection to
auxiliary using connect
string
failed with ora-12528 (doc id 419440.1)
Create a static entry
for the auxiliary database in the listener.ora file of the auxiliary database
oracle_home and
restart the listener.
For example
Create the listener as
below on the standby
Prod =
(description_list =
(description =
(address = (protocol =
tcp)(host = 10.10.10.123)(port = 1521))
)
)
Sid_list_listener =
(sid_list =
(sid_desc =
(sid_name = plsextproc)
(oracle_home =
/files/tech_st/11.1.0)
(program = extproc)
)
(sid_desc =
(sid_name = prdstby)
(oracle_home =
/files/tech_st/11.1.0)
(service_name = prdstby)
)
)
Or/and
Use the oracle10g
feature ( specify (UR=A) in connect data )
make below entry in
the tnsnames.ora file of the auxiliary database oracle_home
Tnsnames.
Ora on production
Prdstby =
(description =
(address_list =
(address = (protocol =
tcp)(host = 10.10.10.123)(port = 1521))
)
(connect_data =
(service_name = prdstby)(UR=A)
)
)
Perform
tnsping on both the servers
Connect
to standby database server
[orastby@ebs
prod_ebs]$ tnsping prod
Tns ping utility for
linux: version 11.1.0.7.0 - production on 03-jun-2014 14:56:49
Copyright (c) 1997,
2008, oracle. All rights reserved.
Used parameter files:
Used tnsnames adapter
to resolve the alias
Attempting to contact
(description = (address_list = (address = (protocol = tcp)(host =
10.10.10.456)(port =
1521))) (connect_data
= (service_name = prod) (UR=A)))
Ok (30 msec)
[orastby@ebs
prod_ebs]$ tnsping prdstby
Tns ping utility for
linux: version 11.1.0.7.0 - production on 03-jun-2014 14:56:52
Copyright (c) 1997,
2008, oracle. All rights reserved.
Used parameter files:
Used tnsnames adapter
to resolve the alias
Attempting to contact
(description = (address_list = (address = (protocol = tcp)(host =
10.10.10.123)(port =
1521))) (connect_data
= (service_name = prdstby)(UR=A)))
Ok (0 msec)
Connect
to Primary database server
[oraprod@proddb
~]$ tnsping prod
Tns ping utility for
linux: version 11.1.0.7.0 - production on 04-jun-2014 13:05:11
Copyright (c) 1997,
2008, oracle. All rights reserved.
Used parameter files:
/test1/db/tech_st/11.1.0/network/admin/prod_proddb/sqlnet_ifile.ora
Used tnsnames adapter
to resolve the alias
Attempting to contact
(description= (address=(protocol=tcp)(host=proddb.ora-data.blogspot.in)(port=1521))
(connect_data=
(service_name=prod) (instance_name=prod)))
Ok (10 msec)
[oraprod@proddb
~]$ tnsping prdstby
Tns ping utility for
linux: version 11.1.0.7.0 - production on 04-jun-2014 13:05:14
Copyright (c) 1997,
2008, oracle. All rights reserved.
Used parameter files:
/test1/db/tech_st/11.1.0/network/admin/prod_proddb/sqlnet_ifile.ora
Used tnsnames adapter
to resolve the alias
Attempting to contact
(description = (address_list = (address = (protocol = tcp)(host =
10.10.10.123)(port =
1521))) (connect_data
= (service_name = prdstby)(UR=A)))
Ok (0 msec)
[oraprod@proddb ~]$
Connect
to standby database server
New initialization
file will be created now add/change the below parameter in the pfile and now
create spfile
using that pfile,
Db_unique_name = prdstby
Log_file_name_convert
='/test1/db/apps_st/data','/files/apps_st/data','/test1/db/apps_st/data5','/files/apps_st/data5'
Log_archive_config
='dg_config=(prdstby,prod)'
Log_archive_dest_1
='location=/data/standby_archives/'
Log_archive_dest_2
='service=prod lgwr async valid_for=(online_logfiles,primary_role)
db_unique_name=prod'
Log_archive_dest_state_2
='defer'
Fal_server ='prod'
Fal_client ='prdstby'
REMOTE_LOGIN_PASSWORDFILE='EXCLUSIVE'
Standby_file_management
='auto'
Now check whether we
are able to connect to the databases from both the ends (production &
standby)
Connect
to Primary database server
[oraprod@proddb
~]$ sqlplus sys/*********@prod as sysdba
Sql*plus: release
11.1.0.7.0 - production on wed jun 4 13:07:28 2014
Copyright (c) 1982,
2008, oracle. All rights reserved.
Connected to:
Oracle database 11g
enterprise edition release 11.1.0.7.0 - 64bit production
With the partitioning,
olap, data mining and real application testing options
Sql>
exit
Disconnected from
oracle database 11g enterprise edition release 11.1.0.7.0 - 64bit production
With the partitioning,
olap, data mining and real application testing options
[oraprod@proddb
archives]$ sqlplus sys/*********@prdstby as sysdba
Sql*plus: release
11.1.0.7.0 - production on wed jun 4 13:07:34 2014
Copyright (c) 1982,
2008, oracle. All rights reserved.
Connected to:
Oracle database 11g
enterprise edition release 11.1.0.7.0 - 64bit production
With the partitioning,
olap, data mining and real application testing options
Sql>
exit
Duplicate
the database from primary
Once we are able to
get connected, we need to run the rman from the primary database
[oraprod@proddb
~ ]$ rman target sys/********@prod auxiliary sys/*********@prdstby
Recovery manager:
release 11.1.0.7.0 - production on wed jun 4 13:09:58 2014
Copyright (c) 1982,
2007, oracle. All rights reserved.
Connected to target
database: prod (dbid= ***********)
Connected to auxiliary
database: prod (not mounted)
RMAN>
duplicate target database for standby from active database nofilenamecheck;
Once the backup is
completed, the standby database will be in mount stage.
Keep the database in recovery
mode so that the
archives which are shipped from primary server will be applied directly on the
standby server.
Connect
to standby database server
$
sqlplus / as sysdba
SQL*Plus: Release
11.2.0.3.0 Production on Tue Nov 26 05:34:09 2013
Copyright (c) 1982,
2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g
Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning,
OLAP, Data Mining and Real Application Testing options
SQL>
select status from v$instance;
STATUS
------------
MOUNT
Once the database is
in mount state, we need to put the database in the MRP (Managed Recovery
Process) mode
SQL>
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION;
Database altered.
Check the sequence number
on the standby
SQL>
select sequence#,process,status,block# from v$managed_standby;
SEQUENCE# PROCESS STATUS
BLOCK#
---------- ---------
------------ -----------------------------------------------
0 ARCH CONNECTED 0
0 ARCH CONNECTED 0
0 ARCH CONNECTED 0
0 ARCH CONNECTED 0
4790 MRP0 WAIT_FOR_LOG 0
Catalog
and apply the archives through RMAN if there is a lot of gap.
Connect
to Primary database server
Enable the transmission of
redo log to the physical standby database
SQL>
alter system set LOG_ARCHIVE_DEST_STATE_2=ENABLE ;
System altered.
Connect
to Standby database server
SQL>
select sequence#,process,status,block# from v$managed_standby;
SEQUENCE# PROCESS STATUS
BLOCK#
---------- ---------
------------ ----------
0 ARCH CONNECTED 0
0 ARCH CONNECTED 0
0 ARCH CONNECTED 0
0 ARCH CONNECTED 0
4794 MRP0 APPLYING_LOG
726764
0 RFS IDLE 0
4798 RFS IDLE 2836481
4797 RFS IDLE 194561
SQL> /
SEQUENCE# PROCESS STATUS
BLOCK#
---------- ---------
------------ ----------
0 ARCH CONNECTED 0
0 ARCH CONNECTED 0
0 ARCH CONNECTED 0
0 ARCH CONNECTED 0
4804 MRP0 WAIT_FOR_LOG 0
0 RFS IDLE 0
0 RFS IDLE 0
0 RFS IDLE 0
4804 RFS IDLE 975235
Now the Standby database is
completey synced with the Primary database
Connect
to Standby database server Validate whether the archives shipped are applied on
the
standby
or not
Connect
to the Primary database server
SQL>
select status, error from v$archive_dest where dest_id = 2;
STATUS ERROR
---------
-----------------------------------------------------------------
VALID
SQL>
select name,dest_id,sequence#,creator,registrar,standby_dest,archived,applied,deleted,status,
completion_time from v$archived_log order by completion_time desc;
If
the applied column is YES against dest_id : 2 , then the standby is applying
archives from
production.
Now
check the alert log file on both the servers,
From
the Primary database server log :
[oraprod@proddb
~]$ tail -f /test2/diag/diag/rdbms/prod/PROD/trace/alert_PROD.log
Wed Jun 04 11:32:12 2014
LNS1 started with pid=277,
OS id=28046
Beginning log switch
checkpoint up to RBA [0x12c0.2.10], SCN: 6815176626618
Thread 1 advanced to log
sequence 4800 (LGWR switch)
Current log# 4 seq# 4800
mem# 0: /test1/db/apps_st/data/log04a.log
Current log# 4 seq# 4800
mem# 1: /test1/db/apps_st/data/log04b.log
******************************************************************
LGWR: Setting 'active'
archival for destination LOG_ARCHIVE_DEST_2
******************************************************************
Wed Jun 04 11:32:39 2014
Completed checkpoint up to
RBA [0x12c0.2.10], SCN: 6815176626618
Wed Jun 04 11:40:28 2014
Sweep Incident[32057]:
completed
Wed Jun 04 11:42:54 2014
NAME
DEST_ID SEQUENCE# CREATOR REGISTRAR STANDBY_DEST ARCHIVED APPLIED DELETED
STATUS COMPLETION_TIME
/test2/archives/1_4804_842894508.dbf
1 4804 ARCH ARCH NO YES NO NO A 04-JUN-14
PRDSTBY 2 4804 LGWR
LGWR YES YES YES NO A 04-JUN-14
/test2/archives/1_4803_842894508.dbf
1 4803 ARCH ARCH NO YES NO NO A 04-JUN-14
PRDSTBY 2 4803 LGWR
LGWR YES YES YES NO A 04-JUN-14
/test2/archives/1_4802_842894508.dbf
1 4802 ARCH ARCH NO YES NO NO A 04-JUN-14
PRDSTBY 2 4802 LGWR
LGWR YES YES YES NO A 04-JUN-14
/test2/archives/1_4801_842894508.dbf
1 4801 ARCH ARCH NO YES NO NO A 04-JUN-14
PRDSTBY 2 4801 LGWR
LGWR YES YES YES NO A 04-JUN-14
/test2/archives/1_4800_842894508.dbf
1 4800 ARCH ARCH NO YES NO NO A 04-JUN-14
PRDSTBY 2 4800 LGWR
LGWR YES YES YES NO A 04-JUN-14
PRDSTBY 2 4799 ARCH
ARCH YES YES YES NO A 04-JUN-14
/test2/archives/1_4799_842894508.dbf
1 4799 ARCH ARCH NO YES NO NO A 04-JUN-14
PRDSTBY 2 4797 ARCH
ARCH YES YES YES NO A 04-JUN-14
PRDSTBY 2 4798 ARCH
ARCH YES YES YES NO A 04-JUN-14
From
the Primary database server log :
[orastby@ebs
~]$ tail -f
/files/tech_st/11.1.0/admin/PROD_ebs/diag/rdbms/prdstby/PROD/trace/alert_PROD.log
Redo Shipping Client
Connected as PUBLIC
-- Connected User is Valid
RFS[4]: Assigned to RFS
process 8458
RFS[4]: Identified database
type as 'physical standby'
Primary database is in
MAXIMUM PERFORMANCE mode
Primary database is in
MAXIMUM PERFORMANCE mode
RFS[4]: No standby redo
logfiles of size 2867200 blocks exist
Wed Jun 04 10:45:19 2014
Redo Shipping Client Connected
as PUBLIC
-- Connected User is Valid
RFS[5]: Assigned to RFS
process 8461
RFS[5]: Identified database
type as 'physical standby'
RFS[5]: No standby redo
logfiles of size 1865162 blocks exist
RFS[5]: Archived Log:
'/data/standby_archives/1_4799_842894508.dbf'
Wed Jun 04 10:45:31 2014
Redo Shipping Client Connected as PUBLIC
Some more useful link:
ReplyDeleteHi Admin,
I have configured in my test environment, but im getting an error such as ORA-03113: end-of-file on communication channel.
What to do now? please help.
DeleteDear Guest,
Thank for your questions.
Usually this may happened because of Redo log filesystem has no free space or very less free left.
Please verify that.
And if this the problem then you can do either cleanup the filesystem to get the space or Move redo logs to new filesystem as soon as possible.
Hope this may useful.
Regards,
ORA-DATA Team
DeleteDear User,
Below you can get more info:
https://ora-data.blogspot.com/2017/07/ora-03113-end-of-file-on-communication-channel.html
Regards,
ora-data Team
ReplyDeleteHi Admin,
During adding datafile, we are facing issue as ORA-01157: cannot identify/lock datafile 19 and ORA-01110.
We are not able to add datafiles. please help.
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DeleteDear User,
Thank you. We will try to provide all the real time stuff.
Regards,
ora-data Team.
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DeleteDear User,
Thank you very much, it is nice to hear from you.
Thanks & Regards,
ora-data Team.
Hello Sir,
ReplyDeleteKindly write the block on dataguard parameterS details.Please give the clear explanations of each parameter which we are using to configure dataguard.
Thank you
Dear User,
ReplyDeleteThank you for your interest and feedback.
Do you mean Initialization Parameters?
Regards,
ora-data Team