PL/SQL :: How Does Oracle Prioritize Which User Should Get First Value Of Nextvalue
Aug 15, 2012
Oracle version 11g r2...I found an interesting sentance in the manual about concurrent access of sequence. URL....
If two users are accessing the same sequence concurrently, then the sequence numbers each user receives might have gaps because sequence numbers are also being generated by the other user my question is how does oracle prioritise which user should get the first value of the nextval?
I have created a Sequence called testseq. Its working fine since last 1 week. Suddenly no one sequences will not create nextvalue. after executing nextval its return null row.
We are trying to implement the following security to our database.
As of now, the access rights are same for all the windows users logging into the Oracle application with the same Oracle user Id.
But now, we want to improve our security by granting different levels of rights to the users based on their Network Id even though they use the same Oracle User Id to log into the application.
We are not looking for the users to be identified externally.
(CREATE USER "OPS$ORACLE-BASE.COMTIM_HALL" IDENTIFIED EXTERNALLY; GRANT CONNECT TO "OPS$ORACLE-BASE.COMTIM_HALL"; )
we are trying ti implement BMC monitoring tool for our oracle 11g2 RAC/solaris10 environment. for the purpose we create a user called bmcuser in OS level, this user connecting database to monitor, this user occupy shared memory as oracle. Explain why this user taking that much shared memory just to connect database using sqlplus.
oracle taking 55% bmcuser taking 44%,
SQL> show parameters memory
NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ hi_shared_memory_address integer 0 memory_max_target big integer 3232M memory_target big integer 3232M shared_memory_address integer 0 SQL> show parameters sga
NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ lock_sga boolean FALSE pre_page_sga boolean FALSE sga_max_size big integer 3232M sga_target big integer 0 PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP 6449 bmcuser 47M 44M sleep 23 10 0:57:31 0.2% PatrolAgent/1 [code]........
I have installed oracle 10g on opensuse. After i logon as normal user and type sqlplus, it was display an error message as below:-
login: nv2am Password for nv2am: login: Configuration file does not specify default realm when parsing name nv2am Last login: Tue Aug 3 16:33:19 from 10.69.20.25 Have a lot of fun... Directory: /home/nv2am Tue Aug 3 17:36:23 MYT 2010 nv2am@ARMSDEV:/home/nv2am> sqlplus -ksh: sqlplus: not found [No such file or directory] nv2am@ARMSDEV:/home/nv2am> sqlplus "/ as sysdba" -ksh: sqlplus: not found [No such file or directory] nv2am@ARMSDEV:/home/nv2am> set ORACLE_SID="ARMSDEV" nv2am@ARMSDEV:/home/nv2am> svrmgrl -ksh: svrmgrl: not found [No such file or directory] nv2am@ARMSDEV:/home/nv2am>
My Oracle user which i created 5-6 months ago is not getting today when i tried to connect.But sys is getting connected.Also i queried dba_users in which my user was present. Also i did Alter user to change its password successfully., but it is not connecting.
what is an oracle enterprise user , how ti different from a schema user or non schema user ? For connecting to database using enterprise user needs any special drivers or oracle clients ?
I'm currently facing a performance issue with one of my procedure. This procedure had no performance issue some days back. I've generated AWR & ADDM reports. I don't know much about the performance. But whatever I investigated in these reports I found issue with "User I/O".
I don't know how to tune this. overcome this issue.ADDM & AWR reports are attached for your reference.
Attached File(s) AWR_ADDM.zip ( 51.59K ) Number of downloads: 6
-- creates an advantage database user -- the role 'advantage_admin_user' must be available!
define user_name = &1 rem define default_table_space = &2
create user &user_name identified by &user_name#123 default tablespace IN_DEV temporary tablespace TEMP; grant connect to &user_name; grant resource to &user_name; grant advantage_admin_user to &user_name; connect &user_name/&user_name#123 @create_advantage_user_objects.sql
i want to create a group xyz and add some users to xyz group and want to grant/revoke permissions to xyz. So that all the users present in that group will have the same permissions as of the xyz group. so that instead of giving the permissions to users individually i can give it at a time.
We have installed Oracle RAC 11gR2, installation was all successful.But i cannot see ASMSNMP user to login as ASM enterprise manager .If i tries to login as sys (even after assigning SYSASM role) he cannot login.
Quote:Set Oracle_sid=+ASM1 sqlplus / as sysasm grant sysasm to sys; conn sys/*** as sysasm ORA-01031 insufficient privileges
1. To create a read only user who can only query the views as well as db tables and views. 2. How to create such a read-only user. 3. I have taken a full expdp backup of the production and trying to import it on the pre-production.
I use impdp
system/password table_exists_action=replace full = y dumpfile=file_name.dmp remap_schema=SYSTEM:NEW_USER remap_tablespace=SYSTEM:NEW_USER ;
This can replace and import the tables but it can't replace and add the constraints , do I have to add some other parameter in the syntax if so what it should.
I'm looking for a basic password reset / unlock tool for use at a help desk. Environment is mixed 10 and 11G. Current procedure is log into specific database using SQL Plus and manually type out reset/unlock commands.
An Oracle user account got locked, how do I check, which program or session was the cause for it? how to fetch this details along with details like timestamp, ip address, program name.
Wanted to know for Oracle 11 version running on Solaris machine.
If a user defined function in Oracle may throw and catch exceptions depending on input, now does the Oracle logs the exception? Fundamentally we are asking if Oracle logs any random DML errors (not bulk operation). We hope not, as we do not want our client DBA get concerned. There might be many levels of settings in Oracle to log or not log. So if Oracle may log it depending on setting, how do we suppress it either at Oracle specific schema level, or function level?
This is my user defined function:
create or replace FUNCTION ISNUMERIC(char_in CHAR) RETURN NUMBER IS n NUMBER ; BEGIN n := TO_NUMBER(char_in); RETURN 1; EXCEPTION WHEN OTHERS THEN RETURN 0; END;
Is it possible to take export import to the Oracle DB/Schema/Table from other linux user? i have plan to create dummy user like oracle on Linux box, so developer will use this dummy user and logging to oracle BOX and take the dump. I have created one user "TEST" in linux OS. but what is the next? what privilege is required or take dump from other linux user?
I have been asked to improve the speed of our extract feeds to another team. It was using an excel file as csv created with C# reading the csv into a global temporary table and a procedure to insert rows from global table to main table one at a time.
Around 1 million rows That was taking around 25 min. After trying sqlldr and an intermediate table I managed to reduce timing to 15 sec with sqlldr and Direct Path Load. I tried all that in one of our own DEV databases. Now we want to try the approach in one of DEV databases belong to downstream group (the one we feed data). They are rather reluctant to give me access to their DEV database! I have asked them to create a new login and grant object creation (DDL) to this user.They keep saying that they are prepared to give me a role but NOT schema owner. What is the best way of enabling me to create tables somewhere and test loading times with sqlldr.
I need to do full DDL (table/proc creation) and DML on a certain schema. So my question: What is the best way of doing so.. Do I need a schema created for user to do this workI they already have a general purpose schema, can they create a role to have full DDL: rights in that schema?
There is a requirement in my database that I want to restrict the user from directly running queries on database from third party tools such as pl/sql developer and toad.
There is a utility in SQL product_user_profile through which this can be done but it is only restricted if you run the query through sql plus. If I want to restrict and (give suppose select,insert) to a user for directly running queries through PL/SQL.
I would like to know if 'user creation definition' is exported in user mode export if export is done with DBA role..If it is Not, does it mean we always need to precreate the user before we import the dump created using 'user mode export'?
- we have user id parameter.can we update the parameter(:parameter.p_userid) before firing "WHEN NEW FORM INSTANCE TRIGGER"(when new form instance trigger contain code for tree node), for login another canvas as per user rights?
- i have created a login form in one canvas.
- also tree node Hierarchy form created on another canvas. now we want to login through login screen, after login only those forms should show in tree Hierarchy which users have rights. for this purpose we want to pass the parameter of userid before connecting to tree node form through the following query
SELECT COUNT (*) INTO v_count FROM usersinfo WHERE usersname = :USERBLOCK.usernames AND passwords = :USERBLOCK.passwords ;
[code]...
Every thing is working but when we click on button in login form at that time parameter.p_userid will return null. because above code is define on button click in login screen, i cannot understand where i need to define the above code .