1. PLsql的SQL WINDOW中不能执行的语句
楼主的意思，我大概知道了。
其实楼主的意思，基本上就是 哪些 命令，不是标准的 SQL 命令
是 SQL Plus 所特有的命令。
清单如下:
有楼主的 “SHO[W] [option]” 哦
Alphabetic List of SQL*Plus Commands
@{url | file_name[.ext]} [arg ...]
@@ { url | file_name[.ext] } [arg ...]
/ (slash)
ACC[EPT] variable [NUM[BER] | CHAR | DATE | BINARY_FLOAT | BINARY_DOUBLE] [FOR[MAT] format] [DEF[AULT] default] [PROMPT text | NOPR[OMPT]] [HIDE]
*A[PPEND] text
ARCHIVE LOG {LIST | STOP} | {START | NEXT | ALL | integer} [TO destination]
ATTRIBUTE [type_name.attribute_name [option...]]
BRE[AK] [ON report_element [action [action]]] ...
BTI[TLE] [printspec [text | variable] ...] | [ON | OFF]
*C[HANGE] sepchar old [sepchar [new [sepchar]]]
CL[EAR] option ...
COL[UMN] [{column | expr} [option ...]]
COMP[UTE] [function [LAB[EL] text] ... OF {expr | column | alias} ...ON {expr | column | alias | REPORT | ROW} ...]
CONN[ECT] [{logon | /} [AS {SYSOPER | SYSDBA}]]
COPY {FROM database | TO database | FROM database TO database} {APPEND | CREATE | INSERT | REPLACE} destination_table[(column, column, column, ...)] USING query
DEF[INE] [variable] | [variable = text]
*DEL [n | n m | n * | n LAST | * | * n | * LAST | LAST]
DESC[RIBE] {[schema.]object[@connect_identifier]}
DISC[ONNECT]
*ED[IT] [file_name[.ext]]
EXEC[UTE] statement
{EXIT | QUIT} [SUCCESS | FAILURE | WARNING | n | variable | :BindVariable] [COMMIT | ROLLBACK]
*GET [FILE] file_name[.ext] [LIST | NOLIST]
HELP | ? [topic]
*HO[ST] [command]
*I[NPUT] [text]
L[IST] [n | n m | n * | n LAST | * | * n | * LAST | LAST]
*PASSW[ORD] [username]
PAU[SE] [text]
PRI[NT] [variable ...]
PRO[MPT] [text]
{QUIT | EXIT} [SUCCESS | FAILURE | WARNING | n | variable | :BindVariable] [COMMIT | ROLLBACK]
RECOVER {general | managed | BEGIN BACKUP | END BACKUP}
REM[ARK]
REPF[OOTER] [PAGE] [printspec [text | variable] ...] | [ON | OFF]
REPH[EADER] [PAGE] [printspec [text | variable] ...] | [ON | OFF]
R[UN]
*SAV[E] [FILE] file_name[.ext] [CRE[ATE] | REP[LACE] | APP[END]]
SET system_variable value
SHO[W] [option]
SHUTDOWN [ABORT | IMMEDIATE | NORMAL | TRANSACTIONAL [LOCAL]]
*SPO[OL] [filename[.ext] [CRE[ATE] | REP[LACE] | APP[END]] | OFF | OUT]
STA[RT] { url | file_name[.ext] } [arg ...]
STARTUP options | upgrade_options
*STORE {SET} file_name[.ext] [CRE[ATE] | REP[LACE] | APP[END]]
TIMI[NG] [START text | SHOW | STOP]
TTI[TLE] [printspec [text | variable] ...] | [ON | OFF]
UNDEF[INE] variable ...
VAR[IABLE] [variable [type]]
WHENEVER OSERROR {EXIT [SUCCESS | FAILURE | n | variable | :BindVariable] [COMMIT | ROLLBACK] | CONTINUE[COMMIT | ROLLBACK | NONE]}
WHENEVER SQLERROR {EXIT [SUCCESS | FAILURE | WARNING | n | variable | :BindVariable] [COMMIT | ROLLBACK] | CONTINUE [COMMIT | ROLLBACK | NONE]}
XQUERY xquery_statement
*Commands not available in iSQL*Plus.
2. plsql登录无响应
1，先将服务里面的oracleTNSlistener(监听)和oracleDBConsole停止(若oracleDBConsole处于停止运行状态，则只需重启一次监听即可)，然后开启oracleDBConsole，等oracleDBConsole显示正在运行再开启监听服务。
2，如果再次打开登陆出现TNS报错，则点取消进入未登录模式，打开oracle自带的sql plus命令窗口，登入scott账号，然后退出(比如输入exit命令)，再在“会话”栏里选择登入账号进行登入。若有更简单的方法还请不吝分享！
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3. plsql中手动修改数据后怎样查看相应sql的执行语句
你直接 echo $sql;exit;这样就把sql语句打印出来了，然后你把sql语句 复制到数据库执行就可以了。