Dgmgrl - Connect Time Failover And Connection Timeout Control
Oct 26, 2010
I have this box that runs a dataguard observer in a test lab.
Is there a way to configure connect time failover and connection timeout in the connect identifier used by DGMGRL? It does not seem to respect the parameters I supply.
This is what I used for TNSNAMES connection string:
DB=
(DESCRIPTION =
(ADDRESS_LIST =
(FAILOVER=ON)
[Code].....
When the hosts are up, if the instance is not running, I really get a quick reply from DGMGRL. However, when some host is not available, it can take quite a while to get an answer, minutes..
=
I though I could use
(TYPE=select)
(METHOD=basic)
(RETRIES=5)
#(DELAY=1) # defaults to 1 when retries is set
in the connect_data section, but this does not seem to have an effect
=
I also tried ' (CONNECT_TIMEOUT=5)' in the ADDRESS_LIST section
=
So assuming that Oracle NET services are not available on the hosts. What can I use to make 'dgmgrl' report that it can't connect to the host quickly ? Should I look into the TCP timeout parameters ?
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Mar 5, 2010
How connect-time failover is setup.
I am following lab instruction from my Oracle Admin Workshop book. The exercise is to create a 2nd listener to support connect-time failover. I have two listeners up and running. I connected the second listener using Static Database Registration in OEM, and then I started it.
When I looked in the listener.ora file, I was expecting to find the entries for FAILOVER=TRUE but it is not there. Both listeners are designed to connect to the same instance 'orcl'.
My questions:
1) Is the FAILOVER entry supposed to be done automatically when the second listener is created ? or is it always a manual entry ?
2) How can I test that it is working ?
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May 30, 2010
[#|2010-03-17T19:00:26.689+0530|SEVERE|glassfishv3.0|tcplistener.ModuleHandler|_ThreadID=30;_ThreadName=Thread-1;|The log message is null.
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:168)
at java.net.SocketInputStream.read(SocketInputStream.java:182)
at java.io.FilterInputStream.read(FilterInputStream.java:66)
at tcplistener.ByteWrapper.unwrapFromStream(ByteWrapper.java:136)
at tcplistener.ModuleHandler.run(ModuleHandler.java:106)
at java.lang.Thread.run(Thread.java:619)
|#]
[code].....
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Mar 30, 2012
This error keeps on comming in my welogic forms server window many often....can any one tell me why it is so ?
<Error> <oracle.forms.servlet> <FRM-91230> <fatal
error in runtime process: timeout on connection to Java client>
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Feb 28, 2012
Is there any way to control the timeout before connecting via dblink. the idea is to test the dblink before calling functions over it, the problem it when i try 'select 1 from dual@dblink' in case if the remote server is down it takes too long time 5-7 min. which causing hang up the session,
So is there any parameter to reduce the waiting time say after 3 sec stop and return the timeout exception.I try the SQLNET.INBOUND_CONNECT_TIMEOUT parameter but not working, also try the tnsping but it alse take long time when the server down.
the database version is 10gr2.
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Jun 18, 2013
We have a daily batch job executing a oracle-plsql function. Actually the quartz scheduler invokes a java program which makes a call to the oracle-plsql function. This oracle plsql function deletes data (which is more than 6 months) from 4 tables and then commits the transaction.
This batch job was running successfully in the test environment but started failing when new data was dumped to the tables which happened 2 weeks ago (The code is supposed to go into production this week). Earlier the number of rows in each table was not more than 0.1 million. But now it is 1 million in 3 tables and 2.4 million in the other table.
After running for 3 hours, we are getting a error in java (written in the log file) "...Connection reset; nested exception is java.sql.SQLException: Io exception: Connection reset....". When the row-counts on the tables were checked, it was clear that no record was deleted from any of the tables.
Is it possible in oracle database, for the plsql procedure/function to be automatically terminated/killed when the connection is timed out and the invoking session is no longer active?
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Jul 18, 2011
I was getting the following error when trying to connect development database.
sqlplus bala/test11@ORCL.SBC.COM
SQL*Plus: Release 10.2.0.1.0 - Production on Mon Jul 18 13:04:18 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:ORA-12170: TNS:Connect timeout occurred
Enter user-name:
But i am to connect this database through putty,toad at that time. But after sometime, i was able to connect the database.
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Jan 10, 2012
I installed my Oracle 10g R2 software in redhat linux installed in VMWare player in my laptop.
I am trying to connect to database from my laptop which has windows 7 installed
My goal is to connect to database installed in linux vmware from my laptop having windows7 OS..
I have installed Oracle instant client on windows 7,trying to make a connection to database but its giving me the following error when i tried...
sqlplus sqlplus scott/tiger@(description=(address_list=(
address=(protocol=TCP)(host=192.168.1.7)(port=1521)))(connect_data=(service_name=subhani)))..
ora-12170:TNS Connect TimeOut Error..
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Jan 24, 2012
I get below error when trying to connect to database server using
C:Documents and SettingsAdministrator>sqlplus jack/jack@DB_PROD
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Jan 24 12:11:45 2012
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-12170: TNS:Connect timeout occurred
Enter user-name:
FYI,
The database i am trying to connect is 9.2.0.8.0 and the client that is installed in my machine is 10.2.0.1.0
Is problem with the database versions ?
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Aug 26, 2010
In my production -- we have 3 nodes Primary RAC with 2 Nodes Physical secondary Standby RAC. Due to some reason we will have to failover means 3 nodes Primary Standby RAC to 2 Nodes secondary physical Standby RAC. share Steps for Failover ( not switchover) from 3 Nodes Primary RAC to 2 Nodes Physical Standby RAC. I know this is generic and can be find from google but issue is how can failover from 3 nodes primary standby rac to 2 nodes secondary physical standby rac.
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Aug 4, 2010
I have installed 2 node RAC -11gR2 on ORACLE VM Server 2.2.1.now, I want to give tnsentry to my dev team to use this RACDB going forward.I am using scan name in tnsnames.ora file. Also I have make scan name entry in /etc/hosts not in the DNS.
I have below entry in RACDB server...
RACDB =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = RWCORA-cluster-scan)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = racdb)
)
now just for testing purpose, I added this tnsentry in my machine to check the connectivity.I have to add scan name with IP address in /etc/hosts --. and try to connect sqlplus sys@rwcdb as sysdba --> not workingI have to add scan name with IP address , and two RAC VIPs (of both nodes) in /etc/hosts -- and try to connect sqlplus sys@rwcdb as sysdba --> then its working...but again SQL*Developer is not able to connect.
I have make below entry in my machine's /etc/hosts file:
10.40.0.51 RWCORARAC1-vip
10.40.0.52 RWCORARAC2-vip
10.40.0.50 RWCORA-cluster-scan
perfect link through which I can connect OCI, JDBC connection from client side.
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May 12, 2011
when i am connecting to my database in command prompt,sql * plus editor is it successfully connecting to the database but not connecting with the oracle client OEM.
but after connecting the LAN it is not connecting and also in the case when i am connecting to the internet through the USB datacard it is not connecting with the oracle client OEM.
how can i connect to database when the LAN,USB datacard connection.
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Jul 23, 2012
I have sample windows C# application to connect remote Oracle DB(Enterprise edition SQ L plus).
Want to connect remotely without installing oracle client on local system.
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May 13, 2011
I deleted the control file using $rm control01.ctl. But i perform the back up
rman> backup incremental level 0 database;
i have no any backup
so how can i recover the my lost control file to connect with oracle instance.
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Aug 21, 2013
I am not able to connect to ORACLE ODA 11g. but using sqlplus its getting connected with below credential.
URL------------------- jdbc:oracle:thin:sacblmdbuser/sacblmdbuser@10.66.12.229:1521:OVPINHA
Oracle JDBC driver loaded ok.
Unable to create connection
java.sql.SQLException: Io exception: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=186647296)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
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Dec 8, 2010
I am having setup of 2 node 10.2.0.4.0 RAC setup on ASM with Single Instance Physical standby on File System (OS: RHEL 5.4). I configured DG Broker without any major issues. Getting all output of 'show configuration' and all DG related logs are clear. Archives are getting transferred from both Primary nodes.
DGMGRL> show configuration
Configuration
Name: dg_rac
Enabled: YES
Protection Mode: MaxPerformance
Fast-Start Failover: DISABLED
Databases:
livestdby - Primary database
livedg - Physical standby database
Current status for "dg_rac":
SUCCESS
Now I am getting error Error: ORA-16535: CRS is preventing execution of a broker operation.
DGMGRL> switchover to livedg;
Performing switchover NOW, please wait...
Error: ORA-16535: CRS is preventing execution of a broker operation
Oracle Says
Quote:Cause
A broker operation was underway that required CRS to stop managing the instances of this database, but CRS management could not be stopped on behalf of the broker"s request on at least some of the instances, so the broker operation was canceled.Suspend CRS management of this database using SRVCTL STOP DATABASE -D <name> -O NONE. Then reissue the broker request.But this command is not working as it's given to stop the database.
One more thing, it's nowhere said to stop CRS while performing Switchover / Switchback using DG Broker. When we do Switchover / Switchback we keep open only one of the Primary instance.
is there any documentation / link available to switchover of RAC database using dgmgrl (DG Broker)
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Nov 19, 2012
when i configure monitor target in GC12C,1 find i can not add asm instance target, and i use scan ip in 11GR2 rac ( two nodes )the problem is plublic IP's 1521 port not accept connect request from remote IP
error from gc12c
Failed to connect to the ASM: IO Error: The Network Adapter could not establish the connection The Connect Descriptor was (DESCRIPTION=(ADDRESS_LIST = (ADDRESS=(PROTOCOL=tcp)(HOST=172.20.101.78)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=+ASM1)(INSTANCE_NAME=+ASM1)(UR=A)(SERVER=DEDICATED)))
[code]....
how can i let GC12C see ASM instance on each node in cluster??
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Jul 4, 2011
I have a JBOSS aplication server connect to database. When I tested on local, everything was ok. But when i test on real system , have a message "connection time out" on log file of app server while Oracle db still active. I viewed OEM, the system is executing the query :
"SELECT a.path songFilePath, a.BEAT beat from vp_song a, mst_my_album b "+
"where "+
"a.BEAT = b.BEAT "+
"and b.my_album_id IN "+
"(select my_album_id from (select my_album_id, ROW_NUMBER() OVER
(order by my_album_id asc) "+
"R from mst_my_album where msisdn = ?) WHERE R BETWEEN ? and ?)";
But this query is not very hard.
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Jan 18, 2012
When I use Forms_ddl('set role My_Role IDENTIFIED BY PWD'); in form's "When-New-From-Instance" to grant a role to a user.
What should I do for the same for a report?
Is there any way to grant roles to a session on the time of connection?
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Oct 30, 2013
I have a scenario wherein i want to enable / disable a block based upon value of one of its column value. i.e., if value of approval status in
(IN ( 'INCOMPLETE' , 'RETURNED' , 'REJECTED' ) THEN
SET_BLOCK_PROPERTY('RFN_HEADERS_ALL', UPDATE_ALLOWED, PROPERTY_TRUE);
SET_BLOCK_PROPERTY('RFN_LINES_ALL', UPDATE_ALLOWED, PROPERTY_TRUE);
SET_BLOCK_PROPERTY('RFN_HEADERS_ALL', DELETE_ALLOWED, PROPERTY_TRUE);
SET_BLOCK_PROPERTY('RFN_LINES_ALL', DELETE_ALLOWED, PROPERTY_TRUE);
else.....
but the code is not working in pre-query, pre-select or post-query
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Sep 25, 2011
Is it possible to connect 2 database schemes at the same time? I want to update a table from one scheme to another with the following update statement.
Update scheme1.table Set (col1, col2, col3, col4) = (select col1, col2, col3, col4 from scheme2.table);
If there is a way of doing this, I want to do this in some procedure?
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Mar 12, 2010
I would like to implement connect time fail over from my JDBC thin client. The client will try to first connect with dedicated connection mode, if the connection time crosses more than two seconds, then connection will be opened with shared mode. To implement this, I have put the following connection string in my JDBC URL. I am able to connect to database with this URL, however it seems fail over does not work. Is it because, my database listener is not configured with dynamic service registration. If I implement the dynamic service registration, is fail over going to work? Note, I want to fail over in the same database instance but with different listener.
(DESCRIPTION_LIST =
(FAILOVER = TRUE)
(LOAD_BALANCE = FALSE)
[Code].....
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Jan 22, 2013
Is there a way where I can check users/IPs who connect to the database in a specific time 2 days ago?
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Jul 10, 2013
I have one procedure which calls a function. My requirement is if that function didnt return value in 1 minute then stop the exection of that function and call next statement.
Begin
(1).........
(2).......
(3) get_func_val:= function(1,2);
(4)......
(5)....
end;
My requirement is, if (3) doesn't return value in 1 minute, stop the execution of (3) and start executing (4).
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Dec 28, 2011
is there any way to reduce the dblink timeout, i need to test if the remote server is up by testing the dblink throw 'select 1 from dual@link_name' but it take too long time 5-6 min., i need to make it 5 sec after that the exception tns timeout appear. I try with some sqlnet.ora parameters like INBOUND_ TIMEOUT but not work for me, also i try using tnsping but it also take long time when the remote server is down.
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Jun 27, 2012
What is expected behavior for VIP on Linux servers? ( 2-node RAC)
1.When entire RAC stack is running, and one node is rebooted or crashed? Will VIP fail over to second node?
2.When one node RAC stack is contained (crsctl stop crs), shutting down RAC stack on remaining node? What happens to the VIP and Scan IP?
3.When RAC stacks are down on both nodes, one node has VIP on (eth0:1), reboot this node. What happens to the VIP?
We see some behavior in scenario 3, but don't know why the VIP was moved to second node as all Oracle processes are down.
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Jun 8, 2006
When I connect to a Oracle database(remote) using TOAD client, because of the settings of timeout done at the server end(in Oracle), the TOAD session gets time out in 5 minutes.
I want to know how I can increase the timeout interval or if I can keep on pinging the database server so that the TOAD connection does not gets timeout?
PS: When we connect to a unix server using putty, we can keep on pining the server at regular timeout interval by going to Change Settings->Connection->Set KeepAlive
Is there a similar way for TOAD?
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Oct 2, 2013
Is there any timeout for sql queries in oracle, if so what is the timeout parameter.
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Jan 7, 2011
I am very new to data guard...I have a primary and a physical standby database...If the primary got crashed, are the users directly switched to physical standyby (is it automated) or the DBA has to manually do the fail over or switch over....is it the same concept as in RAC like TAF....How can the DBA know that the users are disconnected from the database.....explain with some steps...
the version is 10.2.0...
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Dec 20, 2012
My application uses below jdbc url for database connectivity. Today one of the db node was down for one hour and FAIL OVER did not happen.
<connection-url>
jdbcracle:thin:@(DESCRIPTION=(LOAD_BALANCE=ON)(FAILOVER=ON )(ADDRESS=(PROTOCOL=TCP)(HOST=viphost1)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=viphost2)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=serv ice_name)))
</connection-url>
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