先看下面的例子:oracle中两个系统表.emp,dept. example: 1:not exists(not in) not exists: 这条语句返回select * from scott.dept d where e.deptno=d.deptno and d.deptno=10条件满足的结果集.也就是说, 返回的结果集中不存在d.deptno=10结果集的记录,即emp表中没有dept表中d.deptno=10的记录. SQ...
There are limitations to theIF NOT EXISTSclause. As demonstrated above, we can't prevent an error if we try to add a column to a table that is already present. The output of some older versions of tools is different to what was presented above in 23ai SQL*Plus. For example older vers...
猜测1:SQL导致临时表空间不足? 看了下这条SQL,500多行,大量使用了dblink,但从执行计划看,虽然用到了临时段空间,成本消耗并不大,而且现象是只有昨天出现了这个问题,很难下定论,就是这条SQL导致的。 Oracle的alert.log中会对ORA-01652错误的内容记录trace日志,...
PL/SQL has an internal problem. pl/sql系统问题 ORA-06504: ROWTYPE_MISMATCH 行类型不匹配 The host cursor variable and PL/SQL cursor variable involved in an assignment have incompatible return types. For example, when an open host cursor variable is passed to a stored subprogram, the return ty...
below is the example, 15:20:16 SQL> select username, account_status, lock_date, expiry_date, created, profile, password from dba_users where15:20:18 2 username in ('app1','app2','app3','app4','app5'); USERNAME ACCOUNT_STATUS LOCK_DATE EXPIRY_DA CREATED PROFILE PASSWORD ...
SQL>alter sessionsetevents'942 trace name errorstack level 3';Session altered.SQL>SQL>select*from err;select*from err*ERRORat line1:ORA-00942:table or view does not exist trace文件会在user_dump_dest 目录下 4. 文件分析 主要包含如下几个部分: ...
1.开启SQL*Plus,但不连接到数据库 $ sqlplus /NOLOG 2.连接到数据库 CONN[ECT] [logon] [AS {SYSOPER | SYSDBA}] 其中logon为 {username[/passwd] | /}[@connect_identifier] [edition={edition_name | DATABASE_DEFAULT}] 说明: /:用于连接请求的外部认证,这种验证类型不需要数据库密码。最常见的外部...
below is the example, 15:20:16 SQL> select username, account_status, lock_date, expiry_date, created, profile, password from dba_users where15:20:18 2 username in ('app1','app2','app3','app4','app5'); USERNAME ACCOUNT_STATUS LOCK_DATE EXPIRY_DA CREATED PROFILE PASSWORD ...
# that are needed for the Database Gateway for Microsoft SQL Server # # HS init parameters # HS_FDS_CONNECT_INFO=[192.168.27.57].MSSQLSERVER.TEST HS_FDS_TRACE_LEVEL=OFF#默认,一般不需开启 HS_FDS_RECOVERY_ACCOUNT=RECOVER#访问其他数据库的账号,这个参数似乎没有用途,官方文档也不见细节介绍 ...
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