问题
SQL> select * from all_users;
select * from all_users
*
ERROR at line 1:
ORA-01034: ORACLE not available
Process ID: 0
Session ID: 0 Serial number: 0
解决
开启数据库就OK—startup
SQL> startup;
ORACLE instance started.
Total System Global Area 771751936 bytes
Fixed Size 8797536 bytes
Variable Size 629146272 bytes
Database Buffers 125829120 bytes
Redo Buffers 7979008 bytes
Database mounted.
Database opened.
SQL> select * from all_users;
USERNAME
--------------------------------------------------------------------------------
USER_ID CREATED COM O INH
---------- --------- --- - ---
DEFAULT_COLLATION
