ORA-00051 错误的原因是什么？

1. 另一个会话持有所需资源过长时间 2. 死锁避免超时 3. 超过 DISTRIBUTED_LOCK_TIMEOUT

如何解决 ORA-00051 错误？

1. 识别阻塞会话：SELECT * FROM v$lock WHERE block > 0; 2. 如有必要终止阻塞会话 3. 增加超时或优化阻塞事务

ORA-00051警告锁

Timeout occurred while waiting for a resource

会话在等待获取资源（如锁或闩锁）时超时。

SELECT l.sid, l.type, l.lmode, l.request, l.block FROM v$lock l WHERE l.block > 0;

SELECT sid, serial#, username, event FROM v$session WHERE state = 'WAITING';

#lock#timeout#resource#wait

Timeout occurred while waiting for a resource

会话在等待获取资源（如锁或闩锁）时超时。

SELECT l.sid, l.type, l.lmode, l.request, l.block FROM v$lock l WHERE l.block > 0;

SELECT sid, serial#, username, event FROM v$session WHERE state = 'WAITING';

#lock#timeout#resource#wait