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Start hadr primary db failed with SQL1768N, reason code 7.

Hi,

I got error, SQL1768N Unable to start HADR. Reason code = "7", when I
tried to start hadr primary database. Here are the hadr configuration
of my primary db:

HADR database role = STANDARD
HADR local host name (HADR_LOCAL_HOS T) = testserver
HADR local service name (HADR_LOCAL_SVC ) = 56000
HADR remote host name (HADR_REMOTE_HO ST) = testserver
HADR remote service name (HADR_REMOTE_SV C) = 56001
HADR instance name of remote server (HADR_REMOTE_IN ST) = db2instance2
HADR timeout value (HADR_TIMEOUT) = 120
HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC
Failover log archive path (FAILARCHPATH) =
/logdir1/hadr/
Index re-creation time and redo index build (INDEXREC) = RESTART
Log pages during index build (LOGINDEXBUILD) = ON

Here are the hadr configuration of my standby db:

HADR database role = STANDBY
HADR local host name (HADR_LOCAL_HOS T) = testserver
HADR local service name (HADR_LOCAL_SVC ) = 56001
HADR remote host name (HADR_REMOTE_HO ST) = testserver
HADR remote service name (HADR_REMOTE_SV C) = 56000
HADR instance name of remote server (HADR_REMOTE_IN ST) = db2instance1
HADR timeout value (HADR_TIMEOUT) = 120
HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC
Failover log archive path (FAILARCHPATH) =
/logdir2/hadr/
Index re-creation time and redo index build (INDEXREC) = RESTART
Log pages during index build (LOGINDEXBUILD) = ON

The two instances are on the same server. So firewall is not the issue.
Could anyone please help me to find out why?

Thanks.

Jun 30 '06 #1
8 23461
"Challenge" <ha********@yah oo.com> wrote in message
news:11******** *************@7 5g2000cwc.googl egroups.com...
Hi,

I got error, SQL1768N Unable to start HADR. Reason code = "7", when I
tried to start hadr primary database. Here are the hadr configuration
of my primary db:

HADR database role = STANDARD
HADR local host name (HADR_LOCAL_HOS T) = testserver
HADR local service name (HADR_LOCAL_SVC ) = 56000
HADR remote host name (HADR_REMOTE_HO ST) = testserver
HADR remote service name (HADR_REMOTE_SV C) = 56001
HADR instance name of remote server (HADR_REMOTE_IN ST) = db2instance2
HADR timeout value (HADR_TIMEOUT) = 120
HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC
Failover log archive path (FAILARCHPATH) =
/logdir1/hadr/
Index re-creation time and redo index build (INDEXREC) = RESTART
Log pages during index build (LOGINDEXBUILD) = ON

Here are the hadr configuration of my standby db:

HADR database role = STANDBY
HADR local host name (HADR_LOCAL_HOS T) = testserver
HADR local service name (HADR_LOCAL_SVC ) = 56001
HADR remote host name (HADR_REMOTE_HO ST) = testserver
HADR remote service name (HADR_REMOTE_SV C) = 56000
HADR instance name of remote server (HADR_REMOTE_IN ST) = db2instance1
HADR timeout value (HADR_TIMEOUT) = 120
HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC
Failover log archive path (FAILARCHPATH) =
/logdir2/hadr/
Index re-creation time and redo index build (INDEXREC) = RESTART
Log pages during index build (LOGINDEXBUILD) = ON

The two instances are on the same server. So firewall is not the issue.
Could anyone please help me to find out why?

Thanks.


Make sure that the standby database is activated:

db2 activate db sample

If you receive a message that says that the standby database is already
active, then activate the primary database, then start it for HADR as
primary.
Jun 30 '06 #2
Can a hadr standby be started on an active db? I did what you said and
got error:

SQL1767N Start HADR cannot complete. Reason code = "3".

Thanks for replying.

Mark A wrote:
"Challenge" <ha********@yah oo.com> wrote in message
news:11******** *************@7 5g2000cwc.googl egroups.com...
Hi,

I got error, SQL1768N Unable to start HADR. Reason code = "7", when I
tried to start hadr primary database. Here are the hadr configuration
of my primary db:

HADR database role = STANDARD
HADR local host name (HADR_LOCAL_HOS T) = testserver
HADR local service name (HADR_LOCAL_SVC ) = 56000
HADR remote host name (HADR_REMOTE_HO ST) = testserver
HADR remote service name (HADR_REMOTE_SV C) = 56001
HADR instance name of remote server (HADR_REMOTE_IN ST) = db2instance2
HADR timeout value (HADR_TIMEOUT) = 120
HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC
Failover log archive path (FAILARCHPATH) =
/logdir1/hadr/
Index re-creation time and redo index build (INDEXREC) = RESTART
Log pages during index build (LOGINDEXBUILD) = ON

Here are the hadr configuration of my standby db:

HADR database role = STANDBY
HADR local host name (HADR_LOCAL_HOS T) = testserver
HADR local service name (HADR_LOCAL_SVC ) = 56001
HADR remote host name (HADR_REMOTE_HO ST) = testserver
HADR remote service name (HADR_REMOTE_SV C) = 56000
HADR instance name of remote server (HADR_REMOTE_IN ST) = db2instance1
HADR timeout value (HADR_TIMEOUT) = 120
HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC
Failover log archive path (FAILARCHPATH) =
/logdir2/hadr/
Index re-creation time and redo index build (INDEXREC) = RESTART
Log pages during index build (LOGINDEXBUILD) = ON

The two instances are on the same server. So firewall is not the issue.
Could anyone please help me to find out why?

Thanks.


Make sure that the standby database is activated:

db2 activate db sample

If you receive a message that says that the standby database is already
active, then activate the primary database, then start it for HADR as
primary.


Jun 30 '06 #3
Please help me. Thanks.

Challenge wrote:
Can a hadr standby be started on an active db? I did what you said and
got error:

SQL1767N Start HADR cannot complete. Reason code = "3".

Thanks for replying.

Mark A wrote:
"Challenge" <ha********@yah oo.comwrote in message
news:11******** *************@7 5g2000cwc.googl egroups.com...
Hi,
>
I got error, SQL1768N Unable to start HADR. Reason code = "7", when I
tried to start hadr primary database. Here are the hadr configuration
of my primary db:
>
HADR database role = STANDARD
HADR local host name (HADR_LOCAL_HOS T) = testserver
HADR local service name (HADR_LOCAL_SVC ) = 56000
HADR remote host name (HADR_REMOTE_HO ST) = testserver
HADR remote service name (HADR_REMOTE_SV C) = 56001
HADR instance name of remote server (HADR_REMOTE_IN ST) = db2instance2
HADR timeout value (HADR_TIMEOUT) = 120
HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC
Failover log archive path (FAILARCHPATH) =
/logdir1/hadr/
Index re-creation time and redo index build (INDEXREC) = RESTART
Log pages during index build (LOGINDEXBUILD) = ON
>
Here are the hadr configuration of my standby db:
>
HADR database role = STANDBY
HADR local host name (HADR_LOCAL_HOS T) = testserver
HADR local service name (HADR_LOCAL_SVC ) = 56001
HADR remote host name (HADR_REMOTE_HO ST) = testserver
HADR remote service name (HADR_REMOTE_SV C) = 56000
HADR instance name of remote server (HADR_REMOTE_IN ST) = db2instance1
HADR timeout value (HADR_TIMEOUT) = 120
HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC
Failover log archive path (FAILARCHPATH) =
/logdir2/hadr/
Index re-creation time and redo index build (INDEXREC) = RESTART
Log pages during index build (LOGINDEXBUILD) = ON
>
The two instances are on the same server. So firewall is not the issue.
Could anyone please help me to find out why?
>
Thanks.
>
Make sure that the standby database is activated:

db2 activate db sample

If you receive a message that says that the standby database is already
active, then activate the primary database, then start it for HADR as
primary.
Jul 4 '06 #4
Can a hadr standby be started on an active db? I did what you said and
got error:

SQL1767N Start HADR cannot complete. Reason code = "3".

The answer can be found here:

-------

db2 =? sql1767n

SQL1767N Start HADR cannot complete. Reason code =
"<reason-code>".

Explanation:

Start HADR cannot complete. The explanation corresponding to the
reason code is:
[...]
3 START HADR AS STANDBY cannot be issued on an active
database.
[...]
User Response:

The user response corresponding to the reason code is:
[...]
3 If you intend to change a primary database to a standby
database, issue the TAKEOVER command from the current standby.
If you intend to change a standard database to a standby, the
database must be deactivated first.

-------

i.e., no, one cannot start HADR in the *standby* role on an active
database.

(However, one can start HADR in the *primary* role on an active
database.)

A thumbnail procedure to set up an HADR pair:

- create a db on intended initial primary site/instance
- back up the db
- restore the db on intended initial standby site/instance
- set HADR config params as appropriate for each copy of the db
(initial primary/standby)
- issue START HADR ON DB db AS STANDBY at initial standby
- issue START HADR ON DB db AS PRIMARY at initial primary

Note that at the time of startup in this scenario, the copy of the db
on the initial primary may or may not be active. The copy of the db on
the initial standby is definitely not active; it is (must be) marked as
rollforward pending.

Note as well that the *standby* is started first. If it is not, you
may receive the SQL1768N reason 7. To help prevent split brain, the
primary will not start unless the standby connects to it. (This can be
overridden by the BY FORCE option on the START HADR..AS PRIMARY
command. That causes the primary to start in isolation, which is all
else equal a riskier proposition.)

If the above is news to you, you may want to consult the HADR
documentation before proceeding. See for example the info center in
this area:
http://publib.boulder.ibm.com/infoce...n/t0011725.htm

Btw, searching the Info Center is a breeze using Google search. For
example, the above URL is the top hit using the following text in
Google search:

site:ibm.com db2 initializing hadr

Regards,
- Steve P.
--
Steve Pearson, IBM DB2 for Linux, UNIX, and Windows, IBM Software Group
DB2 "Portland" Team, IBM Beaverton Lab, Beaverton, OR, USA

Jul 6 '06 #5
Thank, Steve. But that's not my original question. Mark answered my
question by asking me to active both standby db and primary db before I
start them. That's why I doubt that standby db cannot be active.

My real problem is when I tried to start my hadr primary db, I got
error SQL1768N with reason code 7. My two instances are on the same
server. So there is no firewall issue. I cannot find anything wrong
with my configuratio(it 's in my first post.)

Any idea?

Thanks.

Steve Pearson (news only) wrote:
Can a hadr standby be started on an active db? I did what you said and
got error:

SQL1767N Start HADR cannot complete. Reason code = "3".


The answer can be found here:

-------

db2 =? sql1767n

SQL1767N Start HADR cannot complete. Reason code =
"<reason-code>".

Explanation:

Start HADR cannot complete. The explanation corresponding to the
reason code is:
[...]
3 START HADR AS STANDBY cannot be issued on an active
database.
[...]
User Response:

The user response corresponding to the reason code is:
[...]
3 If you intend to change a primary database to a standby
database, issue the TAKEOVER command from the current standby.
If you intend to change a standard database to a standby, the
database must be deactivated first.

-------

i.e., no, one cannot start HADR in the *standby* role on an active
database.

(However, one can start HADR in the *primary* role on an active
database.)

A thumbnail procedure to set up an HADR pair:

- create a db on intended initial primary site/instance
- back up the db
- restore the db on intended initial standby site/instance
- set HADR config params as appropriate for each copy of the db
(initial primary/standby)
- issue START HADR ON DB db AS STANDBY at initial standby
- issue START HADR ON DB db AS PRIMARY at initial primary

Note that at the time of startup in this scenario, the copy of the db
on the initial primary may or may not be active. The copy of the db on
the initial standby is definitely not active; it is (must be) marked as
rollforward pending.

Note as well that the *standby* is started first. If it is not, you
may receive the SQL1768N reason 7. To help prevent split brain, the
primary will not start unless the standby connects to it. (This can be
overridden by the BY FORCE option on the START HADR..AS PRIMARY
command. That causes the primary to start in isolation, which is all
else equal a riskier proposition.)

If the above is news to you, you may want to consult the HADR
documentation before proceeding. See for example the info center in
this area:
http://publib.boulder.ibm.com/infoce...n/t0011725.htm

Btw, searching the Info Center is a breeze using Google search. For
example, the above URL is the top hit using the following text in
Google search:

site:ibm.com db2 initializing hadr

Regards,
- Steve P.
--
Steve Pearson, IBM DB2 for Linux, UNIX, and Windows, IBM Software Group
DB2 "Portland" Team, IBM Beaverton Lab, Beaverton, OR, USA
Jul 7 '06 #6
My real problem is when I tried to start my hadr primary db, I got
error SQL1768N with reason code 7. My two instances are on the same
server. So there is no firewall issue. I cannot find anything wrong
with my configuratio(it 's in my first post.)

Any idea?

Well, did you start the standby before starting the primary?
As I said before:
A thumbnail procedure to set up an HADR pair:

- create a db on intended initial primary site/instance
- back up the db
- restore the db on intended initial standby site/instance
- set HADR config params as appropriate for each copy of the db
(initial primary/standby)
- issue START HADR ON DB db AS STANDBY at initial standby
- issue START HADR ON DB db AS PRIMARY at initial primary

[...]

Note as well that the *standby* is started first. If it is not, you
may receive the SQL1768N reason 7. To help prevent split brain, the
primary will not start unless the standby connects to it. (This can be
overridden by the BY FORCE option on the START HADR..AS PRIMARY
command. That causes the primary to start in isolation, which is all
else equal a riskier proposition.)

Some systems are also quite finicky about name resolution. Some folks
have had to get around this by using an IP address instead of server
name, though I don't think I've ever seen that for a setup using just
one host. (Of course we don't see single hosts in general, as it's not
a best practice for HA, but it is possible to set up HADR that way for
testing purposes).

The next thing I'd do is examine the diagnostic log (db2diag.log) on
each of the servers to see if there was any relevant messaging. HADR
itself might complain about name resolution (e.g., the local host needs
to resolve to a name matching that supplied in the HADR configuration).

Regards,
- Steve P.
--
Steve Pearson, IBM DB2 for Linux, UNIX, and Windows, IBM Software Group
DB2 "Portland" Team, IBM Beaverton Lab, Beaverton, OR, USA

Jul 7 '06 #7
Thanks, Steve. It's finally solved after the server was rebooted. Some
mystery happened on the server.

Here were the parts in db2diag.log when it failed:

......
2006-06-30-10.27.02.495785-240 I12840853A579 LEVEL: Error
PID : 3272874 TID : 1 PROC : db2hadrp
(CCSTST) 0
INSTANCE: db26v8 NODE : 000 DB : CCSTST
FUNCTION: DB2 UDB, High Availability Disaster Recovery, hdrEduP,
probe:20390
MESSAGE : HADR primary did not establish connection with standby within
timeout
and will shut down. BY FORCE option required to start primary
without
standby. Timeout seconds =
DATA #1 : Hexdump, 4 bytes
0x0780000021C28 C64 : 0000 0078 ...x

2006-06-30-10.27.02.496289-240 I12841433A418 LEVEL: Error
PID : 3272874 TID : 1 PROC : db2hadrp
(CCSTST) 0
INSTANCE: db26v8 NODE : 000 DB : CCSTST
FUNCTION: DB2 UDB, High Availability Disaster Recovery, hdrEduP,
probe:20390
RETCODE : ZRC=0x8280001A=-2105540582=HDR_ ZRC_NO_STANDBY
"Comm time-out in unforced HADR primary start, to avoid
split-brain"
.......

I guess it didn't specify the reason.

Thanks again, Steve.

Steve Pearson (news only) wrote:
My real problem is when I tried to start my hadr primary db, I got
error SQL1768N with reason code 7. My two instances are on the same
server. So there is no firewall issue. I cannot find anything wrong
with my configuratio(it 's in my first post.)

Any idea?


Well, did you start the standby before starting the primary?
As I said before:
A thumbnail procedure to set up an HADR pair:
>
- create a db on intended initial primary site/instance
- back up the db
- restore the db on intended initial standby site/instance
- set HADR config params as appropriate for each copy of the db
(initial primary/standby)
- issue START HADR ON DB db AS STANDBY at initial standby
- issue START HADR ON DB db AS PRIMARY at initial primary
>
[...]
>
Note as well that the *standby* is started first. If it is not, you
may receive the SQL1768N reason 7. To help prevent split brain, the
primary will not start unless the standby connects to it. (This can be
overridden by the BY FORCE option on the START HADR..AS PRIMARY
command. That causes the primary to start in isolation, which is all
else equal a riskier proposition.)


Some systems are also quite finicky about name resolution. Some folks
have had to get around this by using an IP address instead of server
name, though I don't think I've ever seen that for a setup using just
one host. (Of course we don't see single hosts in general, as it's not
a best practice for HA, but it is possible to set up HADR that way for
testing purposes).

The next thing I'd do is examine the diagnostic log (db2diag.log) on
each of the servers to see if there was any relevant messaging. HADR
itself might complain about name resolution (e.g., the local host needs
to resolve to a name matching that supplied in the HADR configuration).

Regards,
- Steve P.
--
Steve Pearson, IBM DB2 for Linux, UNIX, and Windows, IBM Software Group
DB2 "Portland" Team, IBM Beaverton Lab, Beaverton, OR, USA
Jul 12 '06 #8
Did y do a
db2stop
db2start
after you
db2 update db cfg for databasename using hadr.....

and do
db2 update alternate server for database using hostname port
db2 terminate
then
db2 start hadr.....

Challenge wrote:
Thanks, Steve. It's finally solved after the server was rebooted. Some
mystery happened on the server.

Here were the parts in db2diag.log when it failed:

.....
2006-06-30-10.27.02.495785-240 I12840853A579 LEVEL: Error
PID : 3272874 TID : 1 PROC : db2hadrp
(CCSTST) 0
INSTANCE: db26v8 NODE : 000 DB : CCSTST
FUNCTION: DB2 UDB, High Availability Disaster Recovery, hdrEduP,
probe:20390
MESSAGE : HADR primary did not establish connection with standby within
timeout
and will shut down. BY FORCE option required to start primary
without
standby. Timeout seconds =
DATA #1 : Hexdump, 4 bytes
0x0780000021C28 C64 : 0000 0078 ...x

2006-06-30-10.27.02.496289-240 I12841433A418 LEVEL: Error
PID : 3272874 TID : 1 PROC : db2hadrp
(CCSTST) 0
INSTANCE: db26v8 NODE : 000 DB : CCSTST
FUNCTION: DB2 UDB, High Availability Disaster Recovery, hdrEduP,
probe:20390
RETCODE : ZRC=0x8280001A=-2105540582=HDR_ ZRC_NO_STANDBY
"Comm time-out in unforced HADR primary start, to avoid
split-brain"
......

I guess it didn't specify the reason.

Thanks again, Steve.

Steve Pearson (news only) wrote:
My real problem is when I tried to start my hadr primary db, I got
error SQL1768N with reason code 7. My two instances are on the same
server. So there is no firewall issue. I cannot find anything wrong
with my configuratio(it 's in my first post.)
>
Any idea?

Well, did you start the standby before starting the primary?
As I said before:
A thumbnail procedure to set up an HADR pair:

- create a db on intended initial primary site/instance
- back up the db
- restore the db on intended initial standby site/instance
- set HADR config params as appropriate for each copy of the db
(initial primary/standby)
- issue START HADR ON DB db AS STANDBY at initial standby
- issue START HADR ON DB db AS PRIMARY at initial primary

[...]

Note as well that the *standby* is started first. If it is not, you
may receive the SQL1768N reason 7. To help prevent split brain, the
primary will not start unless the standby connects to it. (This can be
overridden by the BY FORCE option on the START HADR..AS PRIMARY
command. That causes the primary to start in isolation, which is all
else equal a riskier proposition.)

Some systems are also quite finicky about name resolution. Some folks
have had to get around this by using an IP address instead of server
name, though I don't think I've ever seen that for a setup using just
one host. (Of course we don't see single hosts in general, as it's not
a best practice for HA, but it is possible to set up HADR that way for
testing purposes).

The next thing I'd do is examine the diagnostic log (db2diag.log) on
each of the servers to see if there was any relevant messaging. HADR
itself might complain about name resolution (e.g., the local host needs
to resolve to a name matching that supplied in the HADR configuration).

Regards,
- Steve P.
--
Steve Pearson, IBM DB2 for Linux, UNIX, and Windows, IBM Software Group
DB2 "Portland" Team, IBM Beaverton Lab, Beaverton, OR, USA
Jul 13 '06 #9

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by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
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9086
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
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isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
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5994
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
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4762
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

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