ORA-00354: corrupt redo log block header
ORA-00354: corrupt redo log block header Issue : Normal users could not connect to database. It messaged ORA-00257 :Connect Internal Only until freed. Whenever you try to archive the redo log it...
View ArticleDifference between Raw Device and Block Device
Difference between Raw Device and Block Device A RAW Device read/write 0 or more bytes, in a stream and can be opened using Direct I/O. RAW devices can be faster for certain applications like databases...
View ArticleHow to Boot from SAN
Information: This is a general overview of the steps needed to install an OS as boot from SAN. You should consult your SAN and HBA configuration for your specific configuration requirements. Not...
View ArticleFragmentation Report
col tsname format a16 justify c heading ‘Tablespace’ col nfrags format 999,990 justify c heading ‘Free|Frags’ col mxfrag format 999,999,990 justify c heading ‘Largest|Frag (KB)’ col...
View ArticleSilent Installation of Oracle
===== Windows Silent Installation - Create staging area for your installation by copying the installation software to central location. mkdir C:\download - Start the setup.exe in record mode to...
View ArticleHow to move profiles from one database to another database
How to move SQL Profiles from one Database to another Database 1- Create the staging table SQL> SYS@DB1 SQL> BEGIN DBMS_SQLTUNE.CREATE_STGTAB_SQLPROF ( table_name => ‘SQL_PROFILES’,...
View Articlebasic rman commands
1. All Backup Sets, Backup Pieces, and Proxy Copies To list all backup sets, backup pieces, and proxy copies: RMAN> list backup; 2. Expired Backup List We can also specify the EXPIRED keyword to...
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Disk signature of disk 0 is equal to the disk signature of disk 1
Disk signature of disk 0 is equal to the disk signature of disk 1 This error occurred on one of the virtual machines on the ESX environment. It probably also caused another error a bit further up in...
View ArticleHow to Deploy Remote Desktop Connection Broker with High Availability
You have very good Document Provided in Microsoft Technet http://technet.microsoft.com/en-us/library/ff686148%28v=WS.10%29.aspx
View ArticleHow to convert VDI to VMDK file
How to convert VDI to VMDK file Download qemu-img.exe file from the web use the following command to convert .vdi file to .vmdk qemu-img.exe convert -O vmdk opennebula-4.0-sandbox.vdi...
View ArticleConsolidated AWR report for RAC
11gR2 consolidated AWR report for RAC awrgrpt.sql This is a cluster wide awr report, so you can see a lot of the information from all the nodes in the same section, and you can also see aggregated...
View ArticleWhat is Oracle RAC Node Eviction
What is Oracle RAC Node Eviction One of the most common and complex issue is node eviction issue. A node is evicted from the cluster after it kills itself because it is not able to service the...
View ArticleLogical IO should also addressed more than Physical IO
Please read the following document to understand more on the same. http://www.hotsos.com/e-library/abstract.php?id=7
View ArticleHow to change SQL Prompt in Oracle
Take a backup of glogin.sql in ORACLE_HOME\sqlplus\admin Now Edit glogin.sql and add these lines SET TIME ON SET TIMING ON set sqlprompt "_user '@' _connect_identifier > " Now try to connect using...
View ArticleHow to configure DGMGRL
DG broker does not have the ability to create standby and is used for managing the dataguard configuration. Pri db_unique_name = ‘TESTPRI’ DG db_unique_name = ‘TESTDG’ Configuration(any...
View ArticleTablespace Growth Monitoring Script
Tablespace Growth Monitoring Script column “tablespace_name” heading “Tablespace | Name” format a20 column “FileCount” heading “File | Count” format 999999 column “Size(MB)” heading “Size | (MB)”...
View ArticleHow to find who Truncated the Table
SQL> conn / as sysdba Connected. SQL> EXECUTE DBMS_LOGMNR.ADD_LOGFILE( LOGFILENAME =>’+DG1/mudhalvan/onlinelog/group_1.003.345746983′); PL/SQL procedure successfully completed. SQL> EXECUTE...
View ArticleWhat is Redo, Rollback and Undo?
Redo : The redo log records all changes made to data, including both uncommitted and committed changes. In addition to the online redo logs Oracle also stores archive redo logs. All redo logs are...
View ArticleOracle Data Guard Network Latency
Sample Implementation 1: Maximum Availability Mode Data Guard Maximum Availability – SYNC Continous redo shipping, validation and apply up to 10ms network latency – approx 60 miles Sample...
View ArticleWhat is rolling upgrade
It is a new ASM feature from Database 11g.ASM instances in Oracle database 11g release(from 11.1) can be upgraded or patched using rolling upgrade feature. This enables us to patch or upgrade ASM nodes...
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