Data Guard

How to Build Asymmetric Standby Database for Data Guard

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Asymmetric Data Guard Usually we build data guard environments with the symmetric architecture design on primary and standby servers, that is, single-instance to single-instance or RAC to RAC. Practically, we could have downgraded standby servers in hardware specifications. For example, we may use 16 cores per instance on the primary side but use 8 cores […]
Data Guard

How to Resolve ORA-01034: ORACLE not available

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If you saw ORA-01034 in the alert log, don’t panic, it’s not generated from the database that you are currently running. … Tue Oct 13 14:35:08 2008 Errors in file /oracle/admin/ORCL1/bdump/orcl1_arc1_3295892.trc: ORA-01034: ORACLE not available It’s usually from one of other databases which is connected via database links or archive log destination (Log Transportation). In […]
Data Guard

How to Resolve ORA-16055: FAL request rejected

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In Oracle MAA, data guard plays a very important role to secure our data on the remote location. Since it involves network and interconnection between two databases, it is pretty complicated to do troubleshooting. That’s why you might see ORA-16055: FAL request rejected at times. The network problem could include host, router, firewall, LAN, VPN, […]