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The persistent store "_WLS_AdminServer" could not be deployed:

<Error> <Store> <BEA-280061><The persistent store "_WLS_AdminServer" could not be deployed:
 [Store:280105]The persistent file store "_WLS_AdminServer" cannot open file _WLS_ADMINSERVER000000.DAT.

If there is above issue while starting the weblogic server then the *.lok files and *.DAT files should be cleared.

The files has to be cleared from $DOMIAN_HOME/servers/(server_name)
find . -name '*.DAT' -print -exec rm {} \;
find . -name '*.lok' -print -exec rm {} \;

For Example

For Admin server

$DOMAIN_HOME/servers/<server name>/tmp/Adminserver.lok
$DOMAIN_HOME/servers/<server name>/data/ldap/ldapfiles/Embedded.lok
$DOMAIN_HOME/servers/<server name>/data/store/default/_WLS_ADMINSERVER000000.DAT
$DOMAIN_HOME/servers/<server name>/data/store/diagnostics/WLS_DIAGNOSTICS000000.DAT

For Managed servers

$DOMAIN_HOME/servers/<server name>/tmp/<servername>.lok
$DOMAIN_HOME/servers/<server name>/data/ldap/ldapfiles/Embedded.lok
$DOMAIN_HOME/servers/<server name>/data/ldap/store/default/_WLS_<servername>000000.DAT
$DOMAIN_HOME/servers/<server name>/data/ldap/store/diagnostics/WLS_DIAGNOSTICS000000.DAT


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