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Hanh Nguyen
Oct 31, 20155 min read
How to Diagnose Slow TNS Listener / Connection Performance
Questions to ask 1. Is the problem intermittent or happening all the time? 2. When did the problem start to happen and what was changed...
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Hanh Nguyen
Oct 31, 20151 min read
How To Change the Listener Log Filename Without Stopping the Listener
Note for 11g and newer installations: This procedure only works if ADR has been disabled in the listener.ora (addition of...
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Hanh Nguyen
Oct 3, 20152 min read
ORA-12514: TNS:listener does not currently know of service requested in connect
In order to connect remotely to an instance that is not started and not registered against the listener, it is necessary to configure a...
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Hanh Nguyen
Oct 3, 20153 min read
How To Start/Stop A Password Protected Listener From A Script
Please note that the indications below are strictly informative and they do not imply any security guarantee on Oracle’s behalf. A1:...
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Hanh Nguyen
Oct 3, 20151 min read
ORA-12528: TNS:listener: all appropriate instances are blocking new connections
There are 2 options to solve this problem Option 1 Start rman from Auxiliary environment. So you can connect to the auxiliary instance...
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