1. The network no problem
2 to uninstall installed or report the problem, use can also climb to 2 days before, now can not logged in, for no reason, and online, and me for a long time, still can't, where is the great god please help analysis problem, appreciate
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CodePudding user response:

Up sqlplus can login no, tnsping can not

CodePudding user response:

Check and reconfigure the listening