Error because of use dblink links to A database, directly from its own database to check A is no problem, only from the service check will appear problem,
Check your own database server not error,
From C server links to A database is not an error,
What's the problem, solving the,
CodePudding user response:
May be slowly over application layer configuration script timeout, then interruptedCodePudding user response:
Solved, has nothing to do with the application, that night found that there is a table cannot access, select, can't drop and restart the database, solved