diff --git a/.github/workflows/integration-mariadb.yml b/.github/workflows/integration-mariadb.yml
index d02d79d43b..f2f059520d 100644
--- a/.github/workflows/integration-mariadb.yml
+++ b/.github/workflows/integration-mariadb.yml
@@ -120,9 +120,11 @@ jobs:
         with:
           php-version: ${{ matrix.php-versions }}
           # https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html#prerequisites-for-manual-installation
-          extensions: bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, mysql, pdo_mysql
+          extensions: apcu, bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, mysql, pdo_mysql
           coverage: none
           ini-file: development
+          # Temporary workaround for missing pcntl_* in PHP 8.3: ini-values: apc.enable_cli=on
+          ini-values: apc.enable_cli=on, disable_functions=          
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -147,6 +149,8 @@ jobs:
           ./occ maintenance:install --verbose --database=mysql --database-name=nextcloud --database-host=127.0.0.1 --database-port=$DB_PORT --database-user=root --database-pass=rootpassword --admin-user admin --admin-pass admin
           ./occ config:system:set debug --value=true --type=boolean
           ./occ config:system:set hashing_default_password --value=true --type=boolean
+          ./occ config:system:set memcache.local --value="\\OC\\Memcache\\APCu"
+          ./occ config:system:set memcache.distributed --value="\\OC\\Memcache\\APCu"          
           ./occ app:enable --force ${{ env.APP_NAME }}
           ./occ app:enable --force call_summary_bot
           ./occ app:enable --force circles
diff --git a/.github/workflows/integration-mysql.yml b/.github/workflows/integration-mysql.yml
index 35672a4cce..43ea845410 100644
--- a/.github/workflows/integration-mysql.yml
+++ b/.github/workflows/integration-mysql.yml
@@ -120,9 +120,11 @@ jobs:
         with:
           php-version: ${{ matrix.php-versions }}
           # https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html#prerequisites-for-manual-installation
-          extensions: bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, mysql, pdo_mysql
+          extensions: apcu, bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, mysql, pdo_mysql
           coverage: none
           ini-file: development
+          # Temporary workaround for missing pcntl_* in PHP 8.3: ini-values: apc.enable_cli=on
+          ini-values: apc.enable_cli=on, disable_functions=          
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -147,6 +149,8 @@ jobs:
           ./occ maintenance:install --verbose --database=mysql --database-name=nextcloud --database-host=127.0.0.1 --database-port=$DB_PORT --database-user=root --database-pass=rootpassword --admin-user admin --admin-pass admin
           ./occ config:system:set debug --value=true --type=boolean
           ./occ config:system:set hashing_default_password --value=true --type=boolean
+          ./occ config:system:set memcache.local --value="\\OC\\Memcache\\APCu"
+          ./occ config:system:set memcache.distributed --value="\\OC\\Memcache\\APCu"          
           ./occ app:enable --force ${{ env.APP_NAME }}
           ./occ app:enable --force call_summary_bot
           ./occ app:enable --force circles
diff --git a/.github/workflows/integration-oci.yml b/.github/workflows/integration-oci.yml
index b21c3d6569..4795494f3b 100644
--- a/.github/workflows/integration-oci.yml
+++ b/.github/workflows/integration-oci.yml
@@ -132,9 +132,11 @@ jobs:
         with:
           php-version: ${{ matrix.php-versions }}
           # https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html#prerequisites-for-manual-installation
-          extensions: bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, oci8
+          extensions: apcu, bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, oci8
           coverage: none
           ini-file: development
+          # Temporary workaround for missing pcntl_* in PHP 8.3: ini-values: apc.enable_cli=on
+          ini-values: apc.enable_cli=on, disable_functions=          
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -154,6 +156,8 @@ jobs:
           ./occ maintenance:install --verbose --database=oci --database-name=XE --database-host=127.0.0.1 --database-port=$DB_PORT --database-user=autotest --database-pass=owncloud --admin-user admin --admin-pass admin
           ./occ config:system:set debug --value=true --type=boolean
           ./occ config:system:set hashing_default_password --value=true --type=boolean
+          ./occ config:system:set memcache.local --value="\\OC\\Memcache\\APCu"
+          ./occ config:system:set memcache.distributed --value="\\OC\\Memcache\\APCu"          
           ./occ app:enable --force ${{ env.APP_NAME }}
           ./occ app:enable --force call_summary_bot
           ./occ app:enable --force circles
diff --git a/.github/workflows/integration-sqlite.yml b/.github/workflows/integration-sqlite.yml
index 3203676ccb..cb7641e3d4 100644
--- a/.github/workflows/integration-sqlite.yml
+++ b/.github/workflows/integration-sqlite.yml
@@ -111,9 +111,11 @@ jobs:
         with:
           php-version: ${{ matrix.php-versions }}
           # https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html#prerequisites-for-manual-installation
-          extensions: bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, sqlite, pdo_sqlite
+          extensions: apcu, bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, sqlite, pdo_sqlite
           coverage: none
           ini-file: development
+          # Temporary workaround for missing pcntl_* in PHP 8.3: ini-values: apc.enable_cli=on
+          ini-values: apc.enable_cli=on, disable_functions=          
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -133,6 +135,8 @@ jobs:
           ./occ maintenance:install --verbose --database=sqlite --database-name=nextcloud --database-host=127.0.0.1 --database-port=$DB_PORT --database-user=root --database-pass=rootpassword --admin-user admin --admin-pass admin
           ./occ config:system:set debug --value=true --type=boolean
           ./occ config:system:set hashing_default_password --value=true --type=boolean
+          ./occ config:system:set memcache.local --value="\\OC\\Memcache\\APCu"
+          ./occ config:system:set memcache.distributed --value="\\OC\\Memcache\\APCu"          
           ./occ app:enable --force ${{ env.APP_NAME }}
           ./occ app:enable --force call_summary_bot
           ./occ app:enable --force circles