Original Post can be viewed at Copying Oracle Scheduler jobs with Arguments

Oracle provides dbms_scheduler.copy_job function to copy oracle scheduler jobs which works great. But problem is that it cannot copy  jobs which have  arguments. Need to copy jobs can arise due to following scenarios 1)Runaway jobs – When Scheduler job is running without any SID. This means OS session is not present and this will not [...]

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Original Post can be viewed at 11g: Multiple failed login attempt can block New Application connections

In Oracle database 11g, a new feature/enhancement has potential of bringing down the application due to multiple sessions hitting database with wrong password. As per Bug 7715339 – Logon failures causes “row cache lock” waits – Allow disable of logon delay [ID 7715339.8] In 11g there is an intentional delay between allowing failed logon attempts [...]

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Original Post can be viewed at Changing CRS/Database timezone in 11.2.0.2 post install

I had installed a 11.2.0.2 RAC setup few days back with incorrect timezone. It had to be PDT but I installed with UTC. Starting/stopping clusteware with correct timezone didn’t solve the issue. In 11.2.0.2 Oracle stores timezone information in file $GRID_HOME/crs/install/s_config_(hostname).txt. In my case file looked like this cd /oragrid/product/11.2/crs/install cat s_crsconfig_prod1.txt <strong>TZ=UTC</strong> NLS_LANG=AMERICAN_AMERICA.AL32UTF8 TNS_ADMIN= [...]

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Original Post can be viewed at Oracle Database Appliance Introduced

Oracle has introduced it new product: ODA (Oracle Database Appliance) I was not able to join Oracle President Mark Hurd’s webcast where he supposed to announce a new Oracle product[It was at 1AM my time and I was sleeping], now viewing this webcast HERE Kerry Osborne has shared information about this product, click link to [...]

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Original Post can be viewed at Effect Of Multiple SHMMAX Settings

Last week I saw a warning message at database startup time saying: WARNING: EINVAL creating segment of size 0x000000000f0020xx fix shm parameters in /etc/system or equivalent It is an Oracle 10204 database running on Solaris. Searching MOS for exact meaning for this warning, it states that a new shared memory segment is getting created to [...]

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Original Post can be viewed at Using Oracle Wallet to Execute Shell script/cron without hard coded Oracle database password

You have been asked to schedule a shell script which need to connect to a  particular user and perform some action? How do you pass the password to script without hardcoding it in script. If password is written in a script, isn’t it a security threat? Well with 10gR2 , Oracle Wallet provides you with [...]

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Original Post can be viewed at Oracle 11gR2 on linux is out

Oracle 11gR2 has been released for linux x86 and x86-64 platform. Software can be downloaded at http://www.oracle.com/technology/software/products/database/index.html Guys start downloading..:) .. Note: – As of now documentation link  is not available on http://tahiti.oracle.com (13:30 G.M.T) Update : – Thanks to H.Tonguç , documentation can be accesed at http://www.oracle.com/pls/db112/homepage?remark=tahiti Cheers Amit Related PostsUsing Oracle Wallet to [...]

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Original Post can be viewed at CleanUp Temporary Segments Occupying Permanent Tablespace

There are situations when we see “temporary segments” in permanent tablespaces hanging around and not getting cleaned up. These temporary segments in permanent tablespace can be created by DDL operations like CTAS and “alter index..rebuild” because the new object is created as a temporary segment in the target tablespace and when the DDL action finishes [...]

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Original Post can be viewed at Generating Datapump Export Dump with Dumpfile name Containing Current Date and Time

Few days back I got a request from development team to generate hourly export dumps of few schemas. Following were the requirements: 1. Dumpfile name should contain current date and timestamp information. 2. The generated dumpfile should be moved to a specific location. 3. All users should have read privileges on the export dumpfile. 4. [...]

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Original Post can be viewed at Cloning database..Just do some Post checks !!

Well I will be covering some points which I believe should be part of post checklist for any cloned database environment. This might not be complete list as it contains point which I have encountered or heard of. 1) Change database Name and Database Id You should try to change the database name/instance name for [...]

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Original Post can be viewed at Connections to DataBase Hang Including “/ as sysdba”

Recently I faced one issue where all the connection to database hung and it was also not possible to login to database using “/ as sysdba”. To get access of sqlplus I used the following syntax: $ sqlplus -prelim / as sysdba With “prelim” option we can run some commands which will help in collection [...]

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Original Post can be viewed at Scheduling Job through Cron??

In case you came across this link searching for Cron syntax, then you can refer to following link http://www.adminschoice.com/docs/crontab.htm Other’s can continue reading the article …. This was a problem which I faced yesterday. We had a mview refresh which was lagging on one of the server. On checking master site, I found that there [...]

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Original Post can be viewed at Recreating Database Link

I was trying to recreate database links as part of database migration activity. This involved mixture of 8i,9i and 10g database. In case of 8i/9i it is very easy to find the old password which was used to create database link as passwords for database links are stored in Clear Text (decrypted format) in SYS.LINK$ [...]

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Original Post can be viewed at Creating Oracle Extended RAC on Oracle VM

Yesterday, I found one very useful article at OTN “Creating Oracle Extended RAC” on completely virtual environment using Oracle VM. As Virtualization is becoming popular day by day and is very cost effective, one must know how to use this to simulate actual environments. Click  here for details on Oracle Extended RAC on Oracle VM. [...]

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Original Post can be viewed at Full Database Export Failing With ORA-00980

While trying to do a full export for 10.2.0.3 database, we were getting following errors About to export the entire database ... . exporting tablespace definitions . exporting profiles . exporting user definitions . exporting roles . exporting resource costs . exporting rollback segment definitions . exporting database links . exporting sequence numbers . exporting [...]

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Original Post can be viewed at Checking Database Feature Usage Stats

Today I came across view DBA_FEATURE_USAGE_STATISTICS (10g) which let’s us know whether particular Database Feature has been used till now or not. If yes, then it also let’s us know when it was used for the first time and also the last usage time. This can be helpful to check if anyone is using Database [...]

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Original Post can be viewed at 10.2.0.4 Window’s Patchset overwrites Sqlnet.ora

Not sure, how many of you are aware of this alert. Oracle has published an Alert document NOTE:726418.1 -ALERT: The 10.2.0.4 Windows Patchset Overwrites %ORACLE_HOME%\network\admin\sqlnet.ora According to it, Patch 6810189 – 10.2.0.4 RDBMS patchset on Microsoft Windows (32-bit) and Microsoft Windows (AMD64 and EM64T) overwrites the %ORACLE_HOME%\network\admin\sqlnet.ora file. In case you have Downloaded (and installed) the [...]

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Original Post can be viewed at Simplified Approach to Resolve ORA-4031

After writing few Case studies and other related articles, I will be sharing my approach for Resolving ORA -4031 error. First we will see what ORA-4031 actually means. 04031, 00000, "unable to allocate %s bytes of shared memory (\"%s\",\"%s\",\"%s\,\"%s\")" // *Cause: More shared memory is needed than was allocated in the shared pool. // *Action: [...]

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Original Post can be viewed at Oracle Database 11G Installation on Solaris 10

I had installed Oracle Database 11g on Solaris 10 few days back. I thought of documenting the steps for easy reference. Please find below steps for the same Installation Pre-Requisite Refer to Oracle Database Installation Guide 11g Release 1 (11.1) for Solaris Operating System for checking Hardware and Software Requirements. User Creation and Environment Settings [...]

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Original Post can be viewed at Effect of OS Terminal Setting “STTY” on Oracle Database

Few days back, while trying to create a synonym over dblink I experienced following error: SQL> create synonym synonymn_name for dual@DBLINK9i; SP2-0042: unknown command "DBLINK9i" - rest of line ignored Strange error !!! Also while trying to perform a simple select statement over another dblink: SQL > select * from dual@dblink10g; SP2-0042: unknown command "DBLINK10g" [...]

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