问题描述：dbca新建实例报错dbca java Permission denied，如下所示：
1、异常重现
[oracle@hisdb1 ~]$ dbca -silent -createDatabase \
> -ignorePrereqFailure \
> -templateName General_Purpose.dbc \
> -responseFile NO_VALUE \
> -sid orcl \
> -sysPassword oracle123 \
> -systemPassword  oracle123\
> -redoLogFileSize 1024 \
> -storageType FS \
> -databaseConfigType SINGLE \
> -datafileDestination /u01/app/oracle/oradata/orcl \
> -enableArchive true \
> -archiveLogDest /u01/app/oracle/archivelog \
> -characterset ZHS16GBK \
> -nationalCharacterSet AL16UTF16 \
> -emConfiguration NONE \
> -automaticMemoryManagement false \
> -totalMemory 10000 \
> -databaseType OLTP \
> -createAsContainerDatabase false
/u01/app/oracle/product/19.3/db_1/bin/dbca: line 212: /u01/app/oracle/product/19.3/db_1/jdk/jre/bin/java: Permission denied
/u01/app/oracle/product/19.3/db_1/bin/dbca: line 212: exec: /u01/app/oracle/product/19.3/db_1/jdk/jre/bin/java: cannot execute: Permission denied

2、问题分析
根据提示可知，文件/u01/app/oracle/product/19.3/db_1/jdk/jre/bin/java无执行权限.
--查正常库的该目录权限信息.
[oracle@leo-oracle-19c bin]$ pwd
/u01/app/oracle/product/19.3.0/db/jdk/jre/bin
[oracle@leo-oracle-19c bin]$ ls -ltr
total 460
-rwxr-xr-x. 1 oracle oinstall 186960 Oct 15  2021 unpack200
-rwxr-xr-x. 1 oracle oinstall   8904 Oct 15  2021 tnameserv
-rwxr-xr-x. 1 oracle oinstall   8840 Oct 15  2021 servertool
-rwxr-xr-x. 1 oracle oinstall   8840 Oct 15  2021 rmiregistry
-rwxr-xr-x. 1 oracle oinstall   8832 Oct 15  2021 rmid
-rwxr-xr-x. 1 oracle oinstall   8840 Oct 15  2021 policytool
-rwxr-xr-x. 1 oracle oinstall   8832 Oct 15  2021 pack200
-rwxr-xr-x. 1 oracle oinstall   8904 Oct 15  2021 orbd
-rwxr-xr-x. 1 oracle oinstall   8832 Oct 15  2021 keytool
-rwxr-xr-x. 1 oracle oinstall   8832 Oct 15  2021 jjs
-rwxr-xr-x. 1 oracle oinstall   6264 Oct 15  2021 jcontrol
-rwxr-xr-x. 1 oracle oinstall 148896 Oct 15  2021 javaws
-rwxr-xr-x. 1 oracle oinstall   8712 Oct 15  2021 java
lrwxrwxrwx. 1 oracle oinstall      8 Dec 23  2023 ControlPanel -> jcontrol

--异常库的权限信息如下.
[root@hisdb1 bin]# ls -ltr
total 468
-rw-r--r-- 1 oracle oinstall 186960 Apr  7  2022 unpack200
-rw-r--r-- 1 oracle oinstall   8904 Apr  7  2022 tnameserv
-rw-r--r-- 1 oracle oinstall   8840 Apr  7  2022 servertool
-rw-r--r-- 1 oracle oinstall   8840 Apr  7  2022 rmiregistry
-rw-r--r-- 1 oracle oinstall   8832 Apr  7  2022 rmid
-rw-r--r-- 1 oracle oinstall   8840 Apr  7  2022 policytool
-rw-r--r-- 1 oracle oinstall   8832 Apr  7  2022 pack200
-rw-r--r-- 1 oracle oinstall   8904 Apr  7  2022 orbd
-rw-r--r-- 1 oracle oinstall   8832 Apr  7  2022 keytool
-rw-r--r-- 1 oracle oinstall   8832 Apr  7  2022 jjs
-rw-r--r-- 1 oracle oinstall   6264 Apr  7  2022 jcontrol
-rw-r--r-- 1 oracle oinstall 148896 Apr  7  2022 javaws
-rw-r--r-- 1 oracle oinstall   8712 Apr  7  2022 java
-rw-r--r-- 1 oracle oinstall   6264 Apr  7  2022 ControlPanel

说明：从以上可知异常库权限不正确.

3、解决方案
--修改相应权限.
[root@hisdb1 bin]# chmod 755 unpack200
[root@hisdb1 bin]# chmod 755 tnameserv
[root@hisdb1 bin]# chmod 755 servertool
[root@hisdb1 bin]# chmod 755 rmiregistry
[root@hisdb1 bin]# chmod 755 rmid
[root@hisdb1 bin]# chmod 755 policytool
[root@hisdb1 bin]# chmod 755 pack200
[root@hisdb1 bin]# chmod 755 orbd
[root@hisdb1 bin]# chmod 755 keytool
[root@hisdb1 bin]# chmod 755 jjs
[root@hisdb1 bin]# chmod 755 jcontrol
[root@hisdb1 bin]# chmod 755 javaws
[root@hisdb1 bin]# chmod 755 java
[root@hisdb1 bin]# ls -ltr
total 468
-rwxr-xr-x 1 oracle oinstall 186960 Apr  7  2022 unpack200
-rwxr-xr-x 1 oracle oinstall   8904 Apr  7  2022 tnameserv
-rwxr-xr-x 1 oracle oinstall   8840 Apr  7  2022 servertool
-rwxr-xr-x 1 oracle oinstall   8840 Apr  7  2022 rmiregistry
-rwxr-xr-x 1 oracle oinstall   8832 Apr  7  2022 rmid
-rwxr-xr-x 1 oracle oinstall   8840 Apr  7  2022 policytool
-rwxr-xr-x 1 oracle oinstall   8832 Apr  7  2022 pack200
-rwxr-xr-x 1 oracle oinstall   8904 Apr  7  2022 orbd
-rwxr-xr-x 1 oracle oinstall   8832 Apr  7  2022 keytool
-rwxr-xr-x 1 oracle oinstall   8832 Apr  7  2022 jjs
-rwxr-xr-x 1 oracle oinstall   6264 Apr  7  2022 jcontrol
-rwxr-xr-x 1 oracle oinstall 148896 Apr  7  2022 javaws
-rwxr-xr-x 1 oracle oinstall   8712 Apr  7  2022 java
-rw-r--r-- 1 oracle oinstall   6264 Apr  7  2022 ControlPanel

说明：此处并未创建ControlPanel的软连接文件，权限修改后成功执行dbca.