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TNS-12541: TNS:no listener Use another port number Listener ORA-12528: TNS:listener: all appropriate instances are blocking new connections TNS-01155: Incorrectly specified SID_LIST_LISTENER parameter in LISTENER.ORA Disabling virbr0 interface on RHEL

☰ Service Startup Issues

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RMAN-04006 :-- RMAN Duplicate Standby Creation Active Database To import tables from 11g to 10g Using External Table

☰ Backup and Recovery

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DATA GUARD BROKER :-- ORA - 16826 LOG SHIPPING CHECK & MANUAL SWITCHOVER PHYSICAL STANDBY Data Guard Broker :-- Switchover and failover physical standby Active Data Guard and Snapshot Standby Database Converting Physical to standby when flashback is not on Converting physical to standby when flashback is on

☰ Data Guard

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Configuring DNS for resolving SCAN IP in VM RAC Two Node Cluster Not able to ping Network Manager Issue in RHEL 7 D: Drive became Inaccessible How to Install rpm package on Linux How to change hostname in Linux ASM Disk Issue Oracle Database Installation Guide for Linux Oracle Database Post – Installation Task

☰ Installation

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Locks in Oracle Database Oracle Wait Class Definition STATSPACK (Definition , Installation & Generation Report) STATSPACK ADMINISTRATION SAMPLE STATSPACK REPORT Reading statspack Report – P1 Reading statspack Report – P2 Parallel Processing Knowledge facts Update statement taking time to complete Enabling flashback, restore point and restore point in database Undo Table Analysis List of Oracle Wait Events 11.2.0.3 List of Oracle enqueue ORA-01031: insufficient privileges RDA :-- Remote Diagnostic Agent Oracle Wait Class Definition How to read statspack report Oracle Performance Tuning

☰ Performance tuning

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Cluster verification Utility Sample Output Output of OCRCHECK Cluster startup error Adding node to 11gR2 Deleting a Node from 3 Node RAC

☰ RAC

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Upgrading Oracle database 11.2.0.2 to 11.2.0.4 Oracle Database 11gR2 Version 11.2.0.3 Installation

☰ Database Upgradation

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Scope Oracle Database 10g Some Useful Command Cluster Commands for 11gR2 Release 11.2.0.3 Common Oracle DBA Tasks Oracle Database Security

☰ Miscellaneous