olcDbCacheSize in back_mdb

-- Here my config "WITHOUT" olcDbCacheSize: ---------------- dn: cn=config objectClass: olcGlobal cn: config olcArgsFile: /var/symas/run/slapd.args olcLogLevel: any olcPidFile: /var/symas/run/slapd.pid olcToolThreads: 1 dn: cn=module{0},cn=config objectClass: olcModuleList cn: module{0} olcModulePath: /opt/symas/lib/openldap olcModuleLoad: {0}back_ldap olcModuleLoad: {1}argon2 olcModuleLoad: {2}rwm.la olcModuleLoad: {3}pcache.la olcModuleLoad: {4}back_mdb.la dn: cn=schema,cn=config objectClass: olcSchemaConfig cn: schema ... dn: olcDatabase={-1}frontend,cn=config objectClass: olcDatabaseConfig objectClass: olcFrontendConfig olcDatabase: {-1}frontend olcAccess: {0}to * by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external ,cn=auth manage by * read olcSizeLimit: 500 olcPasswordHash: {ARGON2} dn: olcDatabase={0}config,cn=config objectClass: olcDatabaseConfig olcDatabase: {0}config olcAccess: {0}to * by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external ,cn=auth manage olcRootDN: cn=admin,cn=config olcRootPW: {ARGON2}$argon2i$v=19$m=4096,t=3,p=1$cXdlcnJ0enV6dWlvMTIz$G/l0lynf7 ygdz0tG+E7S1fBibsFs/L80AUSisiGl/v4 dn: olcDatabase={1}ldap,cn=config objectClass: olcDatabaseConfig objectClass: olcLDAPConfig olcDatabase: {1}ldap olcSuffix: dc=example1,dc=net olcReadOnly: TRUE olcRootDN: cn=admin,dc=example1,dc=net olcMonitoring: FALSE olcDbURI: "ldaps://dc-net01.example.net:636" olcDbIDAssertBind: mode=none flags=prescriptive,proxy-authz-critical bindmeth od=simple timeout=0 network-timeout=0 binddn="cn=proxy-user,cn=users,dc=examp le1,dc=net" credentials="Passw0rd" keepalive=0:0:0 tls_reqcert=never tls_reqs an=allow olcDbIDAssertAuthzFrom: {0}* olcDbRebindAsUser: TRUE olcDbChaseReferrals: FALSE olcDbProtocolVersion: 3 dn: olcOverlay={0}rwm,olcDatabase={1}ldap,cn=config objectClass: olcOverlayConfig objectClass: olcRwmConfig olcOverlay: {0}rwm olcRwmTFSupport: false olcRwmMap: {0}objectClass posixAccount person olcRwmMap: {1}attribute uid SAMACCOUNTNAME olcRwmMap: {2}attribute EMPLOYEETYP DEPARTMENT dn: olcOverlay={1}pcache,olcDatabase={1}ldap,cn=config objectClass: olcOverlayConfig objectClass: olcPcacheConfig olcOverlay: {1}pcache olcPcache: mdb 100000 1 1000 100 olcPcacheAttrset: 0 mail postalAddress telephoneNumber olcPcacheTemplate: "(sn=)" 0 3600 0 0 0 olcPcacheTemplate: "(&(sn=)(givenName=))" 0 3600 0 0 0 olcPcacheTemplate: "(&(departmentNumber=)(secretary=))" 0 3600 olcPcachePersist: TRUE dn: olcDatabase={0}mdb,olcOverlay={1}pcache,olcDatabase={1}ldap,cn=config objectClass: olcMdbConfig objectClass: olcPcacheDatabase olcDatabase: {0}mdb olcDbDirectory: /var/symas/pcache olcDbIndex: objectClass eq olcDbIndex: uid eq ---------------- Did I miss someting or is it wrong in the adminbook?