ORA-28015: Account unlock attempted on read-only database but a conflicting account lockout on the primary exists
文档解释ORA-28015:Accountunlockattemptedonread-onlydatabasebutaconflictingaccountlockoutontheprimaryexistsCause:Anattempttounlockanaccountonaread-onlydatabasewaspre...
深入浅出 Java Concurrency (9): 锁机制 part 4 锁释放与条件变量 (Lock.unlock And Condition)
本小节介绍锁释放Lock.unlock()。Release/TryReleaseunlock操作实际上就调用了AQS的release操作，释放持有的锁。publicfinalbooleanrelease(intarg){ if(tryRelease(arg)){ ...
