Hi,
I am currently playing with Sql Express 2005, and I am wondering if there is any way to create secondary keys on a table?
I know you can create compound Primary Keys (not sure that is the correct terminology), and Foregin Keys. However, I am unsure about secondary keys ( compound or otherwise).
Could someone tell me if this is possible. I am looking at migrating from an Acucobol Vision file system, which makes heavy use of secondary keys.
Cheers
i have created a new login in primary server and provided dbowner permission to primary db.how do i transfer this login to secondary server and assign the same permission to secondary db ?
View 2 Replies View RelatedHello
We have set up Log shipping between Primary and Secondary DB. The secondary DB is right now option: Standby/Read-Only. I can not take Backup of Secondary DB now.
Shall we disable Log shipping and change the DB Option to Multi-user mode and take backup? or any different method, without disabling log shipping?
please advice. Thanks in advance.
Jay
Hello again,
I'm going through my tables and rewriting them so that I can create relationship-based constraints and create foreign keys among my tables. I didn't have a problem with a few of the tables but I seem to have come across a slightly confusing hiccup.
Here's the query for my Classes table:
Code:
CREATE TABLE Classes
(
class_id
INT
IDENTITY
PRIMARY KEY
NOT NULL,
teacher_id
INT
NOT NULL,
class_title
VARCHAR(50)
NOT NULL,
class_grade
SMALLINT
NOT NULL
DEFAULT 6,
class_tardies
SMALLINT
NOT NULL
DEFAULT 0,
class_absences
SMALLINT
NOT NULL
DEFAULT 0,
CONSTRAINT Teacher_instructs_ClassFKIndex1 FOREIGN KEY (teacher_id)
REFERENCES Users (user_id)
)
This statement runs without problems and I Create the relationship with my Users table just fine, having renamed it to teacher_id. I have a 1:n relationship between users and tables AND an n:m relationship because a user can be a student or a teacher, the difference is one field, user_type, which denotes what type of user a person is. In any case, the relationship that's 1:n from users to classes is that of the teacher instructing the class. The problem exists when I run my query for the intermediary table between the class and the gradebook:
Code:
CREATE TABLE Classes_have_Grades
(
class_id
INT
PRIMARY KEY
NOT NULL,
teacher_id
INT
NOT NULL,
grade_id
INT
NOT NULL,
CONSTRAINT Grades_for_ClassesFKIndex1 FOREIGN KEY (grade_id)
REFERENCES Grades (grade_id),
CONSTRAINT Classes_have_gradesFKIndex2 FOREIGN KEY (class_id, teacher_id)
REFERENCES Classes (class_id, teacher_id)
)
Query Analyzer spits out: Quote: Originally Posted by Query Analyzer There are no primary or candidate keys in the referenced table 'Classes' that match the referencing column list in the foreign key 'Classes_have_gradesFKIndex2'. Now, I know in SQL Server 2000 you can only have one primary key. Does that mean I can have a multi-columned Primary key (which is in fact what I would like) or does that mean that just one field can be a primary key and that a table can have only the one primary key?
In addition, what is a "candidate" key? Will making the other fields "Candidate" keys solve my problem?
Thank you for your assistance.
what the best practice is for creating indexes on columns that are foreign keys to the primary keys of other tables. For example:
[Schools] [Students]
---------------- -----------------
| SchoolId PK|<-. | StudentId PK|
| SchoolName | '--| SchoolId |
---------------- | StudentName |
-----------------
The foreign key above is as:
ALTER TABLE [Students] WITH CHECK ADD CONSTRAINT [FK_Students_Schools]
FOREIGN KEY([SchoolId]) REFERENCES [Schools] ([SchoolId])
What kind of index would ensure best performance for INSERTs/UPDATEs, so that SQL Server can most efficiently check the FK constraints? Would it be simply:
CREATE INDEX IX_Students_SchlId ON Students (SchoolId)
Or
CREATE INDEX IX_Students_SchlId ON Students (SchoolId, StudentId)
In other words, what's best practice for adding an index which best supports a Foreign Key constraint?
Pls let me know How I generate script for All primary keys and foreign keys in a table. Thereafter that can be used to add primary keys and foreign keys in another databse with same structure.
Also how I script default and other constraints of a table?
Can somebody explain to me how to best do inserts where you have primary keys and foreign keys.l'm battling.
Is there an article on primary keys/Pk ?
Hello!I have a table A with fields id,startdate and other fields. id and startdateare in the primary key.In the table B I want to introduce a Foreign key to field id of table A.Is this possible? If yes, which kind of key I have to build in table A?Thx in advance,Fritz
View 6 Replies View RelatedHi,
I have recently been looking at a database and wondered if anyone can tell me what the advantages are supporting a unique collumn, which can essentially be seen as the primary key, with an identity seed integer primary key.
For example:
id [unique integer auto incremented primary key - not null],
ClientCode [unique index varchar - not null],
name [varchar null],
surname [varchar null]
isn't it just better to use ClientCode as the primary key straight of because when one references the above table, it can be done easier with the ClientCode since you dont have to do a lookup on the ClientCode everytime.
Regards
Mike
I'm trying to run a set of DBCC commands to empty and then delete a secondary log file; however, no matter how large I make the primary log file it won't empty the secondary file. Any suggestions?
DBCC SHRINKDATABASE (VE, 10)
GO
alter database VE modify file (name= VE_log,size = 1200)
GO
dbcc shrinkfile (VE_log2,EMPTYFILE)
GO
Cannot shrink log file 3 (VE_Log2) because all logical log files are in use.
DbId FileId CurrentSize MinimumSize UsedPages EstimatedPages
------ ------ ----------- ----------- ----------- --------------
17 3 86848 128 86848 128
--alter database VE remove file VE_log2
--GO
I've inherited a database from a SQL7 system, and converted it to SQL2000. It has a secondary data file (.ndf) and a secondary log file. Because the server configurations are different it's no longer necessary to have the secondary files. How to I merge the secondary file data into the primary files and then delete the secondary files?
Thanks,
Al
in my secondary server the database which is in restoring state , when i checked in always on dash board "This secondary database is not joined to the availability group" ,
View 3 Replies View Relatedhi all,
For data ware house project, the reporting team needs to know the delta changes to the master database.
one way we were thinking was to use log shipping and run reports / ETL off the secondary server. But the team needs to know which records got changed and i was thinking of adding timestamp columns to the necessary tables (only on the secondary database schema) and that way we can track the changes.
But from my research, it seems like secondary database needs to have similar schema as promary database.
Is log shipping, can my secondary db have a bit different schema? if so how to do it?
If not, how to accomplish the above secanrio, with out adding new columns (if possible) in the master database and with low over head.
thanks
lucy
Hi,
We have SQL Server 2005 configured with mirroring to protect from physical errors. We also have a need for an (out of sync is ok) reporting server and we'd like to reduce our downtime in the event of a logical error.
The primary database is already being backed up (full and t-logs) to a shared network drive.
Can I implement the second half of log shipping (i.e. the stuff you do to the secondary) so that I don't have to change the current backup schedules on the primary server?
Specifically in the list of sp's below, can I start halfway down at sp_add_log_shipping_secondary_primary (Transact-SQL) ?? Without having to run the primary sp's?
sp_add_log_shipping_primary_database (Transact-SQL)
sp_add_jobschedule (Transact-SQL)
sp_add_log_shipping_alert_job (Transact-SQL)
sp_add_log_shipping_secondary_primary (Transact-SQL)
sp_add_log_shipping_secondary_database (Transact-SQL)
sp_add_log_shipping_primary_secondary (Transact-SQL)
Or do I have to ditch my current backup maintenance plans on the primary and start again?
Thanks
Ed
Hello,
I would like to know how do I carry out this two cases in efficient way:
1. I have two SQL 2005 servers running. One as primary, one as secondary. I would like to synchronize or replicate the transactions at real-time.
2. When primary goes down, I would like my secondary server to take place in needless of IP changes and application settings.
If you have a good architecture on this, please share with me. I am not sure whether my questions are clear enough or not. I also will be reading some articles about these. Thank you in advance.
Regards,
Paing
I have created the companyid as Primary Key.How to create a unique secondary index on Company Name. To avoid inserting duplicate records in database with the same companyname. I m creatin database in sql server 2005 with asp.net C# 2005. I know one way is write the query if not exists at the time of insert.But,i want to know is there anyother way to make a unique secondary index for the companyname on the company tablethanxs
View 1 Replies View RelatedI have a SQL Server 2000 database with a primary data file (MDF) and a secondary data file (NDF). I would like to remove the secondary file and only have the MDF. Is this possible?
Thanks, Dave
I have a database with 2 log files VE_log and VE_log2 (the split is left from legacy system with limited disk space). I want to eliminate the 2nd log.
I've tried SHRINKFILE (EMPTYFILE), which of course reduces the file to the default minimum pages, SHRINKFILE (TRUNCATEONLY), SHRINKDATABASE (VE), and in every case the ALTER DATABASE REMOVE FILE command fails cause the log isn't empty.
Ideas???
Thanks,
Al
While configuring SQL Server 2012 Cluster with Always on, why do we need two secondary replicas.
The attached link will describe the actual query. [URL] ....
I am after T-SQL code which will simply load the next T-log backup file from a network share folder to a warm standby db on a secondary server.What is needed is a Third server (server x), to participate in log shipping (MULTIPLE TARGETS).
Primary SERVER (SERVER A)
Secondary SERVER (SERVER B) Log shipped to via GUI.
THIRD SERVER (SERVER X) which will contain the same log shipped db from server A.
This will simply restore the logs from a network share to keep the db up to date.
"If we fail over a SQL AG group on a failover cluster from one node to another making the secondary the new primary, is there any reason why we would have to fail it back over to the old primary node?"
View 2 Replies View Related2 Boxes in HA, identical hardware (VMs) and both utilising identical storage systems (Nimble SANs).Was needing to do a copy only backup of a few databases for an escrow environment we have, so decided to perform this on the secondary box.Small ~10GB ish database first, seemed to be really slow, so opened resource monitor and noticed that disk read / write was getting limited to about 15MB/s so took a little while (the big one is over 1TB)
Tried this again on the primary it was done in seconds disk rate in the order of 250MB/s (same settings re compression etc).. I decided to make a copy of the backup file on the secondary, the copy disk to disk went in the region of 150MB/s , so it appears that SQL Server is the bottleneck?
Is index created on only primary key or it can be created on secondary key ?
View 2 Replies View RelatedI have a database that has been running well for a few years.
It has a single data file.
It has now become very large and is creaking and running slow sometimes.
Is it possible to now create a secondary data file or do i have other options?
Many Thanks
I hope this hasn't been answered recently..
I have a primary SQL cluster, logshipping my SQL 2005 db to a secondary server used for the logshipping/recovery server only.
Say my primary server starts on fire, melts down, etc. How do I bring the database on the secondary server online? Do I need to roll in the transaction logs, etc.? I'm looking for a step-by-step, as I am very new to SQL.
I've seen some articles in the SQL Books Online, but things don't seem to work correctly when I follow the steps.
Please help,
THanks..
Hello,
Does anyone here know how to properly add a secondary IP address (VIP) to a SQL 2005 failover cluster? I have looked for articles, but so far I can only find references to how to change the VIP on a cluster, not how to add additional VIPs.
I have added the VIP as a resource in the proper resource group, and added it as a dependency to the SQL Server resource, and although the active server properly registers the secondary VIP, the SQL Server process does not listen on that IP. Vexing.
Thanks.
I used the option "Script Table" --> "Create to" in SQL Server Management Studio Express for a table with secondary index (like IX_IndexName), but in the .sql script file there is only the instruction for the primary key and not for the secondary (I expected something like CREATE INDEX). What can I do?
View 3 Replies View RelatedGood day to the people who's reading this post!
I have some trouble with shipping my transaction logs to the secondary database be it on
another server or within the same server to another database instance.
Im using SQL Server 2005 workGroup editions with Service Pack 2.
Here are the problems that i encountered.
I do hope someone has bumped into such a problem and willing to help me out.
I tried on 2 separate servers (not domain environment) and also between 2 separate instances
(which is supposed to be simple!) on
our development server,but was unsuccessful.
Between 2 separate instances on the development server -
No error after configuring Log shipping though.
The configuring went through and it was a success.
Transaction logs was backup every minute and it got copied over to the other folder.
But SQL Agent not doing its last job which is supposed to restore to the secondary database on
another instance.No errors given out in SQL Agent error log files.Anywhere else im supposed to
look to see if there are errors given out?
Both instances SQL Agent has the same log on username and password with Administartive rights
So what went wrong?
Between the 2 servers-
The transaction logs was backup every 1min on the primary server
but it didn't got copied over to to the secondary database.
- Error message given was:Error in restoring database to the secondary
database.Network path given could not be found. Can't open the AxTest.bak file.
(i am very sure i have type the correct network path,even have shared it out and i think the firewall
is blocking incoming traffic since unlike our development server,
which allows us to access when we use Start>Run and type in the ip address,user name
and password,the primary server will only tell me no network path was found)
I also believe it's because the SQL Agent on the secondary database server wasn't given
permission to access the primary database folder.
I've shared out the drive and folder on the secondary server and
even have allowed SQL Agent to read,write and modify on both servers.
For the primary and secondary SQL Agent,
I configure their log on to be the same user account name and password
which have administrative rights.
So what went wrong?
Isit really true that both servers have to be in domain environment before you can configure log
shipping,mirroring and replication?
Hope someone help me out of this predicament.Thank you in advance!
We have a SQL AG configured with 3 servers. 1 Server is on Azure Cloud and 2 are On Prem. The one on Azure is the Primary DB [Copy]. The copies on On Prem are secondary.Databases are more than 6 TB in total. We have already synced 1 copy [One SQL Server] OnPrem with Azure DB. The connection was over a VPN tunnel so it took a almost 8-10 days.. Some failures in between.Now, can I sync my other SQL 2012 server OnPrem with the secondary copy.
View 5 Replies View RelatedI'm converting DBs from SQL7 to SQL2K; the previous owner & server issues had created secondary data and/or log files. The size of the databases, and the configuration of the new server, do not warrant those secondary files. In restoring the databases from SQL7 to SQL2K, either by detach/copy/attach or backup/restore, is there a method for deleting the secondary files without, of course, losing any data?!
TIA,
Al
In always on under availability group server name properties can see the option Readable Secondary. In that for secondary server the Readable Secondary Option is YES and for Primary it is Read-Intent. I believe Read-Intent allows only read only connections and YES allows all user connections.
View 0 Replies View RelatedIn always on under availability group server name properties can see the option Readable Secondary. In that for secondary server the Readable Secondary Option is YES and for Primary it is Read-Intent. I believe Read-Intent allows only read only connections and YES allows all user connections.
What exactly it means for the primary and secondary?
How can I create secondary database on the server i.e. .ndf file?
View 2 Replies View Related