
Senario:
oracle alert log shows
Errors in file $ORACLE_ALERT/trace/<SID>_reco_<pid>.trc:
ORA-12154: TNS:could not resolve the connect identifier specified
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Senario: login by root account and want to su to a specific account. Can't su to this account and show this message
How to solve:
1. use "ps -ef|grep <account name>" to check if processes of this account are too much and cause to be over the process limit value in system configuration
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